Question

Which of the following is most accurate? a. Mass extinctions are due to asteroid impacts; background extinctions may have a wide variety of causes b. Mass extinctions focus on particularly prominent groups, such as dinosaurs' background extinctions affect species from throughout the tree of life c. Only five mass extinctions have occurred, but many background extinctions have occurred d. Mass extinctions involve at least sixty percent of the species present and extinguish groups rapidly and randomly; background extinctions are slower and result from natural selection

Answer 1

Two of the options are mostly accurate:

C. Only five mass extinction have occurred, but many background extinctions have occurred

D. mass extinction involve at least Sixty percent of the species present and extinguish groups rapidly and randomly; background extinction are slower and result from natural selection.

(if to choose one option C is most accurate, but both of them are true)