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organisms that are unable to produce their own organic food and must therefore obtain nutrients by eating other organisms.
an aerobic respiration in animal cells resulting in the formation of lactic acid.
epithelial tissue consisting of a single layer of cells.
the process in which micro-organisms, such as yeast, convert sugars into alcohol under anaerobic...
the process whereby substances dissolved in the blood (such as H+ ions, nitrogenous waste and...
barrier made of coral (a living organism consisting of animal and algal tissues) that lies in...