Scientists have noted that mass extinctions have coincided with:
A) unusually high rates of volcanic activity.
B) meteorite impacts.
C) slow step-wise evolution.
D) a and b

Question

Quizplus · Accepted Answer

Scientists have observed that mass extinctions have coincided with both unusually high rates of volcanic activity and meteorite impacts. These events cause major disruptions to ecosystems, leading to widespread extinctions. The slow step-wise evolution is not necessarily linked to mass extinctions.

Scientists Have Noted That Mass Extinctions Have Coincided With