Evidence suggests that large-scale biological extinctions may have been caused by which one or more of the following?
A)immense volcanic eruptions
B)world-wide floods
C)asteroid impacts
D)fluctuations in the sun's energy output
E)Both A and C

Question

Quizplus · Accepted Answer

Immense volcanic eruptions can release large amounts of sulfur dioxide and other gases into the atmosphere, which can reflect sunlight and cause global cooling. This cooling can disrupt ecosystems and lead to extinctions. Asteroid impacts can also cause global cooling and other catastrophic effects, such as wildfires, tsunamis, and acid rain, that can wipe out many species. There is evidence that both of these events have caused major extinctions in the past, such as the Permian-Triassic extinction and the Cretaceous-Paleogene extinction. While floods and fluctuations in the sun's energy output may have local or regional effects, they are less likely to have caused large-scale biological extinctions.

Evidence Suggests That Large-Scale Biological Extinctions May Have Been Caused