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small fluid-filled sacs that store, transport, or digest cellular products and waste.
the excessive growth of algae in eutrophic streams, rivers and dams.
the spontaneous movement of molecules, atoms or ions, from an area of higher concentration to an...
(also called polymers) large, more complex molecules formed when monomers join together.
the medical condition whereby the body is unable to control the levels of glucose in the blood...
elongated cells in the xylem of vascular plants that transport water and mineral salts.