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a disease caused by the human immunodeficiency virus (HIV).
the non-living ground tissue with thick-walled cells that gives strength, support and protection...
tumours in the lung tissue that interfere with the normal functioning of the lungs.
(also called caustic soda) a white solid, available in pellets, flakes or granules, with the...
anaerobic respiration that occurs in plants and results in the formation of ethanol and carbon...
substance used to test for the presence of starch. It is a mixture of elemental iodine,...