Which of these statements are the same for both nuclear reactions and chemical reaction? check all that apply. a)both can be represented by balanced equations. b)both involve changes to electron arrangements in atoms. c)both involve a change in energy. d)both result in a change in the identities of elements.

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands

the correct answer is b