Possibility of life on other planets is indicated due to the reported occurence of

Options

A. Organic substance
B. Methane
C. Water
D. Both B and C

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:**
The question asks about the indicators of the possibility of life on other planets, specifically which organic substances suggest this possibility.

2. **Identifying the Options:**
The options provided are:
- A) Methane
- B) Water
- C) Both B and C

3. **Analyzing Water:**
- Water (H2O) is essential for life as we know it. It is a fundamental requirement for all living organisms on Earth.
- During the formation of Earth, water was one of the first compounds to form, indicating its significance in the development of life.

4. **Analyzing Methane:**
- Methane (CH4) is produced by certain organisms, particularly methanogens, which are a type of archaea that thrive in anaerobic conditions.
- If methane is found in significant quantities in an atmosphere, it suggests that there are biological processes occurring, as methane would otherwise react with carbon dioxide (CO2) and decompose if no organisms were producing it.

5. **Conclusion:**
- Both water and methane are critical indicators of the potential for life. Water is essential for life, while the presence of methane suggests active biological processes.
- Therefore, the correct answer to the question is option C: both B (Water) and C (Methane).

**Final Answer:**
The possibility of life on other planets is indicated due to the reported occurrence of both water and methane.

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