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biological classification group (taxon) that is divided into species (the plural of genus is genera).
gas consisting mainly of methane and carbon dioxide, which is produced as a result of...
the outermost nucleated cytoplasmic layer of the Schwann cells that surrounds the axon of a...
living ground tissue with thick-walled cells that gives strength, support and protection to a...
chlorofluorocarbons (CFCs) are organic compounds that contain carbon, chlorine and fluorine.
the blood circuit from the heart to the body and back to the heart.