How much amount of carbon is fixed in biosphere through photosynthesis annually.

Answer

To determine the amount of carbon fixed in the biosphere through photosynthesis annually, we can follow these steps:

### Step 1: Understand Photosynthesis
Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy, fixing carbon dioxide (CO2) from the atmosphere into organic compounds.

### Step 2: Identify the Process of Carbon Fixation
Carbon fixation primarily occurs during the dark reactions (Calvin cycle) of photosynthesis. This process takes place in the chloroplasts of photosynthetic organisms.

### Step 3: Consider the Organisms Involved
All photosynthetic organisms, including various species of plants and algae, contribute to the annual carbon fixation in the biosphere.

### Step 4: Find the Annual Carbon Fixation Amount
The total amount of carbon dioxide fixed through photosynthesis annually is approximately 4 x 10^3 kg (or 4000 kg) of CO2.

### Step 5: Conclusion
Thus, the amount of carbon fixed in the biosphere through photosynthesis each year is around 4000 kg.

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