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What are hormones?

They are substances needed for muscle and nerve activity.

They are minerals needed for proper bone formation.

They are the parts of the body targeted by endocrine glands.

They are substances released by endocrine glands.

Respuesta :

hormones are the substance released by the endocrine glands. once released they travel through your bloodstream until they reach their desired target cell. 
d they are substances released by endocrine glands

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