Mass extinctions
A) remove many species, but they are usually replaced within a million years or less by an even greater diversity of life.
B) mainly serve to "weed out" poorly adapted organisms and make room for new, better adapted species.
C) remove well-adapted species and groups from the Earth, so that it may take millions of years for species diversity to recover.
D) are caused by human activity and did not occur prior to the expansion of the Earth's human population.

Question

Quizplus · Accepted Answer

Mass extinctions result in the removal of numerous species from Earth, including well-adapted ones. This disrupts the balance of ecosystems and can lead to a decrease in species diversity that takes millions of years to recover.

Mass Extinctions