Question

What are the two ways by carbon dioxide is fixed in the atmosphere

Answer 1

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Following are the two ways by which carbon dioxide can be fixed in nature:

i. In the process of photosynthesis, carbon dioxide is fixed by the plants.

ii. Dissolved carbon dioxide is used by many marine animals to make their carbonate shells.

Answer 2

Answer:

Conversion of CO 2 into glucose by green plants in the presence of sunlight by photosynthesis. (ii) Usage of carbonates dissolved in the sea water by marine animals to make their shells.