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the mammalian throat.
large spongy organs in which gaseous exchange takes place in vertebrates (with the exception of...
an abnormal response of the immune system to the protein in certain foods.
a form of potential energy stored in chemical bonds and released in a chemical reaction.
a form of asexual reproduction. It is an unequal cell division, in which a small cell forms...
living ground tissue with thick-walled cells that gives strength, support and protection to a...