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Item EN055001: Most species living today did not exist at the time life began.

Which of the following is TRUE about the species that are living on earth today?

  1. All species living today have existed since the time life began.
  2. Most species living today have existed since the time life began, but a few have appeared more recently.
  3. Most species living today did not exist at the time life began.
  4. There is no way of finding out whether all, most, or only a few species living today existed since the time life began.
Distribution of responses
Answer Choice
Overall
Grades
Gender
Primary Language
 
n = 3047
6–8
n = 1924
9–12
n = 1123
Male
n = 1432
Female
n = 1557
English
n = 2707
Other
n = 264
A. 8% 8% 8% 10% 6% 8% 9%
B. 22% 24% 19% 19% 25% 22% 25%
C. 48% 46% 52% 50% 46% 49% 42%
D. 22% 23% 21% 21% 23% 22% 24%