Question

can u pls tell me the meaning of this paragraph..Class-7
Chapter- Transportation of materials. Topic - Circulation of blood​

Answer 1

Answer:

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the continuous movement of blood through the heart and blood vessels, which is maintained chiefly by the action of the heart, and by which nutrients, oxygen, and internal secretions are carried to and wastes are carried from the body tissues.

Answer 2

Answer:

free points

Explanation:

free points