The correct answer is that mammals use a closed, double loop , four chambered heart as a circulatory system of the body.
The circulatory system of mammals is closed system that consists of four chambers, two articles and two ventricles. The deoxygenated blood comes into the heart from one loop and the oxygenated blood from other loop from the heart is circulated to the whole body. This is called as double circulation.
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Answer:
How was the government able to make children go to residential school?
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Answer:
its option A. bright tail feathers of peacocks during breeding season
Explanation:
D: The reactions take place in the thylakoid of the chloroplast.
