Life on Earth has experienced several mass extinctions. What likely caused one or more of these extinctions?
A) an asteroid impact
B) worldwide drought
C) genetic drift
D) an increase in large predatory mammals

Question

Quizplus · Accepted Answer

Several mass extinctions in the past have been linked to asteroid impacts. For example, the extinction of the dinosaurs is believed to have been caused by an asteroid impact approximately 66 million years ago. The impact caused a chain reaction of events that led to a global catastrophe, including a worldwide dust cloud that blocked sunlight, leading to a collapse in the food chain and widespread extinction of species.

Life on Earth Has Experienced Several Mass Extinctions