Aprokaryote is most likely to use which of the following modes of metabolism to release energy. if it is in an environment without oxygen, dies when exposed to oxygen, and use fermentation

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.