Views about human evolution among adults in Iowa

% of adults in Iowa who say humans…

Survey year Evolved; due to natural processes Evolved; due to God's design Evolved; don't know how Always existed in present form Don't know Sample Size
Sample size = 330. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
2014 33% 28% 4% 30% 5% 330

Learn More: Evolved; due to natural processes, Always existed in present form

Views about human evolution among adults in Iowa by religious group

% of adults in Iowa who say humans…

Religious tradition Evolved; due to natural processes Evolved; due to God's design Evolved; don't know how Always existed in present form Don't know Sample Size
Sample size = 0. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Mainline Protestant 23% 37% 7% 25% 9% 102

Learn More: Evolved; due to natural processes, Always existed in present form

DemographicInformation

Age distribution among adults in Iowa by views about human evolution

% of adults in Iowa who are ages…

Views about human evolution 18-29 30-49 50-64 65+ Sample Size
Sample size = 101. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 32% 31% 27% 10% 101
Always existed in present form 11% 34% 30% 26% 100

Generational cohort among adults in Iowa by views about human evolution

% of adults in Iowa who are…

Views about human evolution Younger Millennial Older Millennial Generation X Baby Boomer Silent Greatest Sample Size
Sample size = 101. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 25% 17% 22% 31% 5% < 1% 101
Always existed in present form 4% 14% 26% 36% 18% 1% 100

Gender composition among adults in Iowa by views about human evolution

% of adults in Iowa who are…

Views about human evolution Men Women Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 47% 53% 103
Always existed in present form 52% 48% 101

Racial and ethnic composition among adults in Iowa by views about human evolution

% of adults in Iowa who identify as…

Views about human evolution White Black Asian Latino Other/Mixed Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 88% 3% 1% 5% 3% 103
Always existed in present form 91% 4% 3% < 1% 2% 101

Immigrant status among adults in Iowa by views about human evolution

% of adults in Iowa who are…

Views about human evolution Immigrants Second generation Third generation or higher Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 4% 8% 88% 103
Always existed in present form 7% 2% 91% 100

Educational distribution among adults in Iowa by views about human evolution

% of adults in Iowa who have completed…

Views about human evolution High school or less Some college College Post-graduate degree Sample Size
Sample size = 102. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 32% 37% 22% 9% 102
Always existed in present form 43% 41% 11% 6% 101

Marital status among adults in Iowa by views about human evolution

% of adults in Iowa who are…

Views about human evolution Married Living with a partner Divorced/separated Widowed Never married Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 48% 8% 10% 3% 31% 103
Always existed in present form 63% 8% 10% 8% 11% 101

Parent of children under 18 among adults in Iowa by views about human evolution

% of adults in Iowa who are…

Views about human evolution Parents Non-parents Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 27% 73% 103
Always existed in present form 34% 66% 101

BeliefsandPractices

Belief in God among adults in Iowa by views about human evolution

% of adults in Iowa who say they…

Views about human evolution Believe in God; absolutely certain Believe in God; fairly certain Believe in God; not too/not at all certain Believe in God; don't know Do not believe in God Other/don't know if they believe in God Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 37% 21% 12% < 1% 25% 4% 103
Always existed in present form 89% 6% 1% 2% 2% < 1% 101

Importance of religion in one's life among adults in Iowa by views about human evolution

% of adults in Iowa who say religion is…

Views about human evolution Very important Somewhat important Not too important Not at all important Don't know Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 22% 30% 24% 24% < 1% 103
Always existed in present form 77% 20% 1% 1% < 1% 101

Attendance at religious services among adults in Iowa by views about human evolution

% of adults in Iowa who attend religious services…

Views about human evolution At least once a week Once or twice a month/a few times a year Seldom/never Don't know Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 17% 28% 55% < 1% 103
Always existed in present form 50% 36% 14% < 1% 101

Frequency of prayer among adults in Iowa by views about human evolution

% of adults in Iowa who pray…

Views about human evolution At least daily Weekly Monthly Seldom/never Don't know Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 22% 18% 8% 52% < 1% 103
Always existed in present form 72% 19% 4% 5% < 1% 101

Frequency of participation in prayer, scripture study or religious education groups among adults in Iowa by views about human evolution

% of adults in Iowa who attend prayer group…

Views about human evolution At least once a week Once or twice a month Several times a year Seldom/never Don't know Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 6% 3% 6% 85% < 1% 103
Always existed in present form 38% 9% 13% 41% < 1% 101

Frequency of meditation among adults in Iowa by views about human evolution

% of adults in Iowa who meditate…

Views about human evolution At least once a week Once or twice a month Several times a year Seldom/never Don't know Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 20% 6% 7% 65% 3% 103
Always existed in present form 47% 3% 1% 49% 1% 101

Frequency of feeling spiritual peace and wellbeing among adults in Iowa by views about human evolution

% of adults in Iowa who feel a sense of spiritual peace and wellbeing…

Views about human evolution At least once a week Once or twice a month Several times a year Seldom/never Don't know Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 43% 9% 16% 31% 1% 103
Always existed in present form 69% 13% 8% 10% < 1% 101

Frequency of feeling wonder about the universe among adults in Iowa by views about human evolution

% of adults in Iowa who feel a sense of wonder about the universe…

Views about human evolution At least once a week Once or twice a month Several times a year Seldom/never Don't know Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 47% 9% 17% 26% < 1% 103
Always existed in present form 39% 22% 12% 26% 1% 101

Sources of guidance on right and wrong among adults in Iowa by views about human evolution

% of adults in Iowa who say they look to…most for guidance on right and wrong

Views about human evolution Religion Philosophy/reason Common sense Science Don't know Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 8% 23% 61% 7% 1% 103
Always existed in present form 55% 1% 41% 4% < 1% 101

Belief in absolute standards for right and wrong among adults in Iowa by views about human evolution

% of adults in Iowa who say…

Views about human evolution There are clear standards for what is right and wrong Right or wrong depends on the situation Neither/both equally Don't know Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 15% 85% < 1% < 1% 103
Always existed in present form 54% 45% 1% < 1% 101

Frequency of reading scripture among adults in Iowa by views about human evolution

% of adults in Iowa who read scripture…

Views about human evolution At least once a week Once or twice a month Several times a year Seldom/never Don't know Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 9% 8% 9% 73% < 1% 103
Always existed in present form 52% 9% 6% 33% 1% 101

Interpreting scripture among adults in Iowa by views about human evolution

% of adults in Iowa who say the holy scripture is…

Views about human evolution Word of God; should be taken literally Word of God; not everything taken literally Word of God; other/don't know Not the word of God Other/don't know Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 10% 21% 1% 63% 5% 103
Always existed in present form 46% 37% 4% 9% 4% 101

Belief in Heaven among adults in Iowa by views about human evolution

% of adults in Iowa who …in heaven

Views about human evolution Believe Don't believe Other/don't know Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 50% 44% 6% 103
Always existed in present form 87% 8% 6% 101

Belief in Hell among adults in Iowa by views about human evolution

% of adults in Iowa who …in hell

Views about human evolution Believe Don't believe Other/don't know Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 31% 64% 5% 103
Always existed in present form 79% 18% 3% 101

SocialandPoliticalViews

Party affiliation among adults in Iowa by views about human evolution

% of adults in Iowa who identify as…

Views about human evolution Republican/lean Rep. No lean Democrat/lean Dem. Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 23% 18% 60% 103
Always existed in present form 58% 12% 30% 101

Political ideology among adults in Iowa by views about human evolution

% of adults in Iowa who are…

Views about human evolution Conservative Moderate Liberal Don't know Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 25% 37% 37% 1% 103
Always existed in present form 61% 17% 13% 9% 101

Views about size of government among adults in Iowa by views about human evolution

% of adults in Iowa who would rather have…

Views about human evolution Smaller government; fewer services Bigger government; more services Depends Don't know Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 35% 55% 4% 6% 103
Always existed in present form 71% 25% < 1% 3% 101

Views about government aid to the poor among adults in Iowa by views about human evolution

% of adults in Iowa who say government aid to the poor…

Views about human evolution Does more harm than good Does more good than harm Neither/both equally Don't know Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 33% 63% 3% < 1% 103
Always existed in present form 54% 44% 2% < 1% 101

Views about abortion among adults in Iowa by views about human evolution

% of adults in Iowa who say abortion should be…

Views about human evolution Legal in all/most cases Illegal in all/most cases Don't know Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 76% 22% 2% 103
Always existed in present form 27% 72% 1% 101

Views about homosexuality among adults in Iowa by views about human evolution

% of adults in Iowa who say homosexuality…

Views about human evolution Should be accepted Should be discouraged Neither/both equally Don't know Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 81% 15% 2% 3% 103
Always existed in present form 38% 54% 5% 3% 101

Views about same-sex marriage among adults in Iowa by views about human evolution

% of adults in Iowa who …same-sex marriage

Views about human evolution Strongly favor/favor Oppose/strongly oppose Don't know Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 75% 16% 9% 103
Always existed in present form 26% 64% 10% 101

Views about environmental regulation among adults in Iowa by views about human evolution

% of adults in Iowa who say…

Views about human evolution Stricter environmental laws and regulations cost too many jobs and hurt the economy Stricter environmental laws and regulations are worth the cost Neither/both equally Don't know Sample Size
Sample size = 103. Visit this table to see approximate margins of error for a group of a given size. For full question wording, see the survey questionnaire. Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.
Evolved; due to natural processes 24% 74% 2% < 1% 103
Always existed in present form 49% 42% 6% 3% 101