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Q.

Autotrophs obtain carbon for photosynthesis from:

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a

Air

b

Soil

c

Water

d

Other organisms

answer is A.

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Detailed Solution

The autotrophs obtain CO2 from the air for the process of photosynthesis.  Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.

Hence, the correct option is the air.

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