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the second biological classification group (taxon) that is divided into phyla (for animals) or divisions (for plants). There are five or six kingdoms in the main biological classification system.
unicellular organisms that do not have a proper nucleus or membrane bound organelles.
the inner region of the kidney, striped in appearance, made up of renal pyramids.
rain that contains high levels of sulfuric acid, hydrochloric acid and nitric acid.
the broad band of tissue in plant organs under the epidermis, including the parenchyma cells and...