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an allotroph is an element that exists in two different forms but in the same phase. Example) oxygen gas (O2) and ozone gas (O3) The current definition refers to an autotroph - that is an organism that can make its own food. Example) a plant or photosynthetic bacteria

No, an autotroph manufactures its food from inorganic components. An allotroph (or heterotroph) takes in food that was made by other organisms. --EncycloPetey 00:23, 20 January 2009 (UTC)