Question

A geologist finds that the number of fossils in a rock layer had significantly fewer fossils of all types than the layers above and below it.

Which Is the best conclusion?

A.
An asteroid impacted the earth during this time.

B.
The earth's magnetic pole shifted during this time.

C.
Some type of mass extinction event occurred during this time.

D.
The rate of sedimentation changed during this time.
MEDALS GIVEN!!!!!!!!!!

Answer 1

its either a or d

Answer 2

yea its d

Answer 3

C