Question

why blood needed by all the parts of a body ?

Answer 1

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▶️Because blood contains dissolved oxygen and some essential nutrients which are necessary for our body...


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Answer 2

Here is your answer mate

Blood is the fluid which flows in the blood vessels.
It transports substance like digested food from small intestine to various parts of the body.
It also has white blood cells which fight against germs that may enter our body and platelets which helps the blood to clot.
So blood is needed by all the parts of the body.

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