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a hormone produced by the adrenal glands which helps to maintain the balance of sodium in the blood and tissue fluid.
barrier made of coral (a living organism consisting of animal and algal tissues) that lies in...
in plants: the first plant to become established in an area.in plants: the first plant to become...
ground tissue with thin-walled cells that makes up most of the plant body. These cells are used...
tissues that are responsible for the transport of substances within the plant.