Major utillisation of carbon from atmosphere is through

Options

A. Decomposition
B. Photosynthesis
C. Respiration
D. Human activities

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the major utilization of carbon from the atmosphere. We need to identify which process primarily uses atmospheric carbon.

2. **Analyzing the Options**:
- **Decomposition**: This process involves breaking down dead organic matter into simpler substances. While it does involve carbon, it does not utilize atmospheric carbon directly. Therefore, this option is incorrect.

- **Respiration**: In respiration, organisms take in oxygen and release carbon dioxide (CO2). This process does not utilize atmospheric carbon; instead, it releases it back into the atmosphere. Hence, this option is also incorrect.

- **Human Activities**: Human activities, such as burning fossil fuels, contribute to the release of carbon dioxide into the atmosphere rather than utilizing it. Thus, this option is incorrect as well.

- **Photosynthesis**: This process is carried out by green plants, which absorb carbon dioxide from the atmosphere to produce glucose and oxygen. Photosynthesis is the primary way in which carbon from the atmosphere is utilized. Therefore, this option is correct.

3. **Conclusion**: The major utilization of carbon from the atmosphere is through **photosynthesis**.

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