At about what frequency is Earth struck by a meteorite large enough (about 10 km in diameter)to cause mass extinctions?
A)about every 1 million years
B)about every 10 million years
C)about every 100 million years
D)This has yet to occur on Earth.

Question

Quizplus · Accepted Answer

The frequency at which Earth is struck by a meteorite large enough to cause mass extinctions is estimated to be about every 100 million years. This is based on the ages of known impact craters and the timing of mass extinction events in the fossil record.

At About What Frequency Is Earth Struck by a Meteorite