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What are autotrophic and heterotrophic organisms?

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Autotrophs are organisms that can produce their own food from the substances available in their surroundings using light (photosynthesis) or chemical energy (chemosynthesis). Heterotrophs cannot synthesize their own food and rely on other organisms — both plants and animals — for nutrition. read more

Autotrophic organisms produce their own food by converting inorganic materials to organic molecules, while heterotrophic organisms are unable to produce their own food. Heterotrophs rely on food that comes from other organisms. read more

Organisms are divided into autotrophs and heterotrophs according to their energy pathways. Autotrophs are those organisms that are able to make energy-containing organic molecules from inorganic raw material by using basic energy sources such as sunlight. read more

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Further Research

Autotroph vs Heterotroph
www.diffen.com

Autotrophs and Heterotrophs
hyperphysics.phy-astr.gsu.edu