Question

How do scientist explain the incomplete fossil record?

A) The fossil record is limited to fossilized animals and the absence of fossilized plants.

B) Stasis occurs when the structure of a species in the fossil record does not change over a long period of time.

C) Not all organisms become fossils. Processes like erosion and mountain building can change rock layers, causing fossils to be spread over multiple layers or destroyed.

D) The adaptive radiation of mammals helps explain a rapid increase in mammal diversity of the fossil record after a mass extinction.

Answer 1

B

Step-by-step explanation:

go with your gut - Frank

Answer 2

C

Step-by-step explanation:

Organisms that existed million years ago were mostly soft-bodied, thus they left no traces behind when they died. Due to geological processes such as soil erosion, whatever evidence left behind by these soft-bodied organisms was destroyed.