The theme song for The Big Bang Theory says that the autotrophs began to drool. What in the universe is an autotroph? Thanks for any answers.
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An autotroph[α], or producer, is an organism that produces complex organic compounds (such as carbohydrates, fats, and proteins) from simple inorganic molecules using energy from light (by photosynthesis) or inorganic chemical reactions (chemosynthesis).
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An organism which makes its own food. Not like humans preparing food into dishes, but like plants using photosynthesis to provide themselves with their needed nutrients.