A mass extinction is an event during which many species die out in a short period of time. Scientists have many theories to explain the mass extinctions that have occurred during Earth's history.

Question

Which of the following may help cause mass extinctions?
A.
global cooling
B.
asteroids striking the Earth
C.
global warming
D.
all of these

Answer 1

D. all of these

All of the listed factors—global cooling, asteroids striking the Earth, and global warming—can contribute to mass extinction events. Each of these can cause significant environmental changes that can lead to the decline or extinction of numerous species.