What makes plants the beginning of the food chain? a. plants store chemical energy as glucose b. only plants use solar energy in a chemical process to produce food c. all organisms eat plants d. plants make food for other organisms.

the real answer is b. scintillation counter

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