A scientist finds a snail fossil in a layer of rock in a desert. Which action would
help the scientist determine the environmental conditions may been when the
snail existed?
A) Looking for more fossils in different layers of rock
B) Counting the number of similar snail fossils found in other parts of the world
C) Analyzing the characteristics of other plant and animal fossils found in the same layer of rock
D) Recording information about plants and animals living in the desert today, near where the
fossil was found