How frequently do objects that threaten widespread devastation hit the Earth?
A)about once every thousand years
B)about once every million years
C)about once every year
D)about once every hundred million years

Question

How frequently do objects that threaten widespread devastation hit the Earth?
A)about once every thousand years 
B)about once every million years 
C)about once every year 
D)about once every hundred million years

Quizplus · Accepted Answer

According to scientific estimates, objects that threaten widespread devastation hit the Earth about once every million years.

How Frequently Do Objects That Threaten Widespread Devastation Hit the Earth