Which part of the model shows carbon moving from the atmosphere to the
biosphere?

answer; i believe that the correct answer is (light);

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

your spelling is a little off : ]

c is the correct answer hope this !