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
Chart showing distrubtion of responses for Item EN055001
Students Responding Correctly
Group Correct Total Percent
Overall 1462 3047 48%
Grades
  6–8 878 1924 46%
  9–12 584 1123 52%
Gender
  Male719143250%
  Female715155746%
Primary Language
  English1316270749%
  Other11226442%

View data table