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9. Why is blood needed by all the parts of a body?

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Blood is needed by all parts of the body because it is an important part of the transport system of our body and performs the following these important functions:

(i) Transports oxygen from the lungs to all the body cells.

(ii) Carries carbon-dioxide, waste products back to the lungs so that it can be exhaled easily.

(iii) Blood fights against diseases and infections.

Posted by

Divya Prakash Singh

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