Question

quiz
matching 10 points
multiple choice 20 points
30 points total
1 multiple choice 1 point
scientists estimate that approximately what percentage of all species that ever lived are now extinct?
75%
50%
over 99%
less than 10%

Explanation:

Scientists estimate that over 99% of all species that ever lived are now extinct. This is based on the fossil record and the understanding of evolutionary processes.

Answer:

Over 99%