All but which statement describes why hypotheses are valuable, even if incorrect.
a) adds to existing knowledge
b) answering a defined problem
c) allows theories to be proven
d) allows theories to be disproved

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.