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endocrine gland situated on top of each kidney, which produces hormones in response to stresses to the body.
the outermost layer of the plant cell wall that forms the contact surface between adjacent plant...
chlorofluorocarbons (CFCs) are organic compounds that contain carbon, chlorine and fluorine.
involuntary muscle found in the walls of blood vessels, in digestive, respiratory, urinary and...
the gamete-producing phase that produces the zygote from which the sporophyte emerges.