3. Which area of the brain controls the heart rate, digestion, and breathing? O diencephalon
O limbic system
O brain stem
cerebellum

cerebellum

Explanation:

It connects the brain to the spinal cord and controls automatic functions such as breathing, digestion, heart rate and blood pressure.

answer; (phospholipid);

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