Question

a large piece of rock contains a thick - shelled clam fossil. what evidence does this fossil best provide?
○ evidence of the change in diet of the thick - shelled clams over time
○ evidence of the mating habits of clams in previous geologic eras
○ evidence of the environment of the past in the area where the rock was found
○ evidence of the size of the clam population in the past

Explanation:

Fossils are the preserved remains or traces of ancient organisms. A thick - shelled clam fossil in a rock indicates that the area where the rock was found was once an environment suitable for clams (such as a marine or freshwater environment where clams live). It does not provide information about the diet change (no details about what the clam ate over time from just the fossil in the rock), mating habits (no indication of how clams mated from the fossil in the rock), or population size (no data on how many clams there were from the single fossil in the rock).

Answer:

evidence of the environment of the past in the area where the rock was found