Question

how is carbon dioxide fixed in atmosphere​

Answer 1

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.

Answer 2

i1)n the process of photosynthesis,CO2 is fixed by plants. 3) dissolvedCO2 is used by marine organisms to make their carbonate shells. 4) after the death of plant or animal, decomposition takes place and CO2 is released into atmosphere.