<span>A. Mammals use a closed, double-loop circulatory system aided by a four-chambered hearts.
The four chambered heart of a mammal is divided into two atria and two ventricles. Double-loop circulatory system is used. One loop for oxygenated blood, the other loop for deoxygenated blood.</span>
Answer
humans are considered teritiary consumers
Explanation:
Answer:
They cool earth, due to the ash and gas released.
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C would be correct due to the moon being pulled in by the earths gravitational pull
