What can conservation biologists say with certainty about the causes of the extinction of species?
A) Extinction is caused only by human activities.
B) Extinction is caused only by natural events.
C) Extinction is caused by both human activity and natural events.
D) Extinction is probably caused by many factors, most currently unknown.
E) Extinction is balanced by speciation, so there is no net extinction.

Question

Quizplus · Accepted Answer

Conservation biologists acknowledge that extinction is caused by both human activity and natural events, such as climate change, volcanic eruptions, and asteroid impacts. However, human activity, including habitat destruction, hunting, pollution, and the introduction of invasive species, has accelerated rates of extinction to unprecedented levels.

What Can Conservation Biologists Say with Certainty About the Causes