Carbonized fossils are made of: A: the carbon remains of the original organism
B: carbon which replaced the plant or animal
C: a cast of coal
D: a mold left in coal

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.