The hypothesis that the fossil in layer d is younger than the fossil in layer c is supported by the

a) law of gravity.

b) law of relativity.

c) law of superposition.

d) law of thermodynamics.

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods. c. it shows that these organisms share the same habitat. d. it provides evidence that these organisms suffered a genetic mutation.