What do the arrows at point 3 indicate? ОООО
Cool air is above water.
Warm air is above land.
Warm air is cooling quickly.
Cool air is warming quickly.

a i think but idk im not sure

mammal

explanation:

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