Answers

2016-01-18T06:47:28+08:00
To pump blood. The heart is a pumping station in the whole body.
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2016-01-18T08:33:15+08:00

heart serves as a double pump it pushes blood through the blood vessels so that blood will circulate, by double pump, it means that left side of the heart pumps blood  the blood vessel going to different parts of the whole body whole the right side pumps blood going to lungs to collect oxygen and release CO2
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