Question

What is the estimated amount of carbon that is annually fixed in the biosphere through photosynthesis?

• A. $4\times {10}^{13}$ Kg
• B. $4\times {10}^{23}$ Kg
• C. $4\times {10}^{13}$ tonne
• D. $4\times {10}^{23}$ tonne

Answer 1

The correct option is A $4\times {10}^{13}$ Kg

A large amount of carbon is removed from the atmosphere due to the photosynthetic activity of producers, which use carbon dioxide and water to produce glucose in the presence of sunlight. About$4\times {10}^{13}$ kg of carbon is estimated to be fixed per year through photosynthesis, in the biosphere.