Is growth ofbody (human) a physical change or a chemical change?

Growth of a human body is both a physical change as well as a chemical change. Growth involves change in the overall size of human body and a change in any one of the physical properties (like shape, size, colour, and state) is called a physical change.

It is also a chemical change because it is a biochemical process regulated by hormones and enzymes. 

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 Human growth is a chemical change.

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It is a chemical change. You can not be newborn or infant again. 

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It is a chemical change. As a grown up person cannot be turned into an infant again, it is a irreversible change.

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