Answer:
6. Because of how old the rocks are
Explanation:
6. Sedimentary rock forms in layers because of the order they were formed. The older rocks will form first and as time goes on, rock forms above it to create a new layer, and so on.
Answer:
One Idea was the appreciation that the age of the Earth was much greater than had hitherto for been imagined.
Eukaryotic cells are cells that have a nucleus, while prokaryotic cells do not.
