Question

how is carbon dioxide is fixed un earth

Answer 1

Hyyy,

By the photosynthesis the carbon dioxide is consumed to make food by the green plants.In this way carbon dioxide is fixed in atmosphere.Carbon fixation or carbon assimilation is the conversion process of inorganic carbon ( carbon dioxide) to organic compounds by living organisms.

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Answer 2

Carbon fixation or сarbon assimilation is the conversion process of inorganic carbon (carbon dioxide) to organic compounds by living organisms. The most prominent example is photosynthesis, although chemosynthesis is another form of carbon fixation that can take place in the absence of sunlight.