Light is the
a. energy that starts the photosynthesis
b. energy that starts the citric acid cycle
c. end product of oxidative phosphorylation
d. end product of photosynthesis

this would be a math

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