Answer:
D A domestic dog runs away and takes a mate in a nearby pack of coyotes. Their offspring have a mix of dog and coyote characteristics
A. True
However, this is not necessarily the only factor that makes this true.
Your circulatory system consists of your heart, blood vessels and blood, and is responsible for transporting life-giving oxygen throughout your body. When you exercise, your body's need for oxygen increases; the harder you work out, the more oxygen your body demands.
