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 warming
B.
global cooling
C.
asteroids striking the Earth
D.
all of these

Answer 1

D. all of these

All the listed factors—global warming, global cooling, and asteroids striking the Earth—have been associated with mass extinction events in Earth's history. Each can lead to drastic changes in climate, habitat destruction, and disruptions to ecosystems, contributing to the decline of many species.