There is no life on moon due to the absence of :

Options

A. `O_(2)`
B. Water
C. Light
D. Temerature.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks why there is no life on the moon. To answer this, we need to consider the essential requirements for life.

2. **Identifying Essential Requirements for Life**: Life as we know it requires several key elements, including:
- Water
- Oxygen
- Light (sunlight)
- Suitable temperature

3. **Analyzing the Moon's Conditions**:
- **Water**: The moon has very little water, primarily in the form of ice in permanently shadowed craters. Liquid water, which is essential for life, is absent.
- **Oxygen**: While oxygen is crucial for many life forms, it is not the only requirement. The absence of water makes oxygen less relevant in this context.
- **Light**: The moon receives sunlight, but without water, light alone cannot support life.
- **Temperature**: The moon experiences extreme temperature fluctuations, which can be inhospitable for life.

4. **Conclusion**: The most critical factor for the absence of life on the moon is the lack of water. Water is essential for all known forms of life, and without it, life cannot exist.

5. **Final Answer**: Therefore, the reason there is no life on the moon is due to the absence of water.

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