What percentage of the species that have ever existed on Earth are probably now extinct?
A) less than 10%
B) more than 99.9%
C) about 80%
D) about 25%
E) about 75%

Question

Quizplus · Accepted Answer

More than 99.9% of all species that have ever lived on Earth are estimated to be extinct. This reflects the dynamic and often harsh nature of evolution and environmental changes over the planet's history.

What Percentage of the Species That Have Ever Existed on Earth