Using the "Checkpoints Section" of your eBook answer the following question:

Question

Complete the paragraph to describe fossilized organisms.

"Organisms with more complex body plans are more likely to be found in
[ Select ]
rock layers. This prediction is based on observed patterns of
[ Select ]
complexity of physical structures in organisms over time.

Answer 1

"Organisms with more complex body plans are more likely to be found in younger rock layers. This prediction is based on observed patterns of increasing complexity of physical structures in organisms over time."