Dogs breed in the world and even more mixes and mutts than we can count
Answer:
D
Explanation:
the circulatory absorbs nutrients and carries the chemical to signal through endocrine to control the speed of digestion.
there was no following stated.
They differ in single trait
The medulla oblongata is the center of the brain responsible for circulation and respiration. It helps regulate breathing, digestion, sneezing, swallowing, and heart and blood vessel function.
