6 ques on circulatory system of class 10
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how many chambers are present in heat?
how blood is circulated in body?
what is function of valves?
what is function of heart?
which is biggest vein in our body?
difference between arteries and vein?
how blood is circulated in body?
what is function of valves?
what is function of heart?
which is biggest vein in our body?
difference between arteries and vein?
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