Which phrase describes the study of ecology?
a. organisms that grow and adapt to their environment
b. the two-way relationship between a living thing and its environment c. the transfer of light energy
d. comparing biotic and abiotic habitats
it might be c, but i'm not 100% sure. lol

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