500
A scientist finds the fossil remains of animal A buried deep in a layer of rocks. Then the fossil remains of animal B are found in layers of rock below animal A. What can the scientist infer about the fossils?
A. the fossil of animal A is older that that of animal B
B. the fossil of animal B is older than that of animal C
C. animals A and B lived at the same time
D. the scientist cannot make any inferences
What is the fossil of animal B is older that that of animal C