Question

Q23. (a) Name the system responsible transportation of materials in humans. (1+
(b) Which organs constitute this system?
(c) Why does the rate of heart beat increases after running?​

Answer 1

Answer:

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Explanation:

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Answer 2

Explanation:

Circulatory system is the system responsible for transportation of materials in humans. Heart, veins, capillaries and arteries are the organs that constitute this system.