How long have asteroids been striking Earth?
A) During the last million years of geologic time
B) During the last 100 million years of geologic time
C) During the last billion years of geologic time
D) Since Earth formed

Question

Quizplus · Accepted Answer

Asteroids have been striking Earth since its formation about 4.5 billion years ago, as part of the natural processes in the solar system.

How Long Have Asteroids Been Striking Earth