Geologists use tools other than the law of superposition to help them with relative dating. Which statements describe those tools? Check all that apply.

the correct answer is:

a population changes in response to a change in the environment.

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