What is an example of how geologic sediments can be used as indicators of environmental change?

Question

would be finding...

a. thick layers of soil indicating a warm climate

b. plants that need large amounts of water for survival

c. skeletons of animals that live in forests

Answer 1

I would say C, but that's assuming the sediment environment is currently, say, a desert. So that would mean that at one point the environment was a forest, but had eventually turned to desert.

Answer 2

B