kumarGolu
The growth and development provide by a chemical substance in body is called hormones... ...
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Jenifer1234
Hormones are chemical substances produced in the body that controls and regulates the activity of certain cells or organs. Hormones are produced by some glands. For example , Thyroxine is secreted by thyroid gland. ☺
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Hormones are produced by some glands.
For example ,
Thyroxine is secreted by thyroid gland.
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