Organisms that obtain energy from the sun or from the oxidation of inorganic substances; organisms that convert energy into nutrients through a series of chemical reactions. © Nature Educatio [..]

can use carbon dioxide (CO2) and water to form oxygen and complex organic compounds, mainly through the process of photosynthesis

, also known as self-feeders or primary producers, are organisms that produce complex organic compounds, such as carbohydrates, fats, and proteins, from carbon dioxide using light energy (photosynthesis) or inorganic chemical energy (chemosynthesis).

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