doordarshan ke pasandida karyakram ki charcha vistar se karte hue mitra ko patra likhiye
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doordarshan ke pasandida karyakram ki charcha vistar se karte hue mitra ko patra likhiye
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Heart is the vital organ of the human body. Heart plays a major role in our body. The heart is responsible for major functions and transportation in our body. What is your question can't understand.
The heart is an organ that pumps blood throughout the body. Human circulatory system is responsible for the transport of materials inside the human body. The organs of the circulatory system are heart, arteries, veins and capillaries. It comprises four chambers:
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