Biology
Froggies
8

the chemical signal that travels through the bloodstream is part of the blank system

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adityaananda124

Chemical signal can signify the lymphatic, nervous and endocrine system. Mostly endocrine, the endocrine system is the body system responsible for providing the needed hormones for the body. These hormones and body fluids contribute and catalyse the growth, disposition, sex characteristics and other potential corresponding output of these hormones. 

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