Biosphere is :

Options

A. In which individual interact to each other
B. By which life originated
C. The name of a bird
D. Organic compound by which life diminishes

Answer

**Step-by-Step Solution:**

1. **Understanding the Term "Biosphere":**
- The biosphere refers to the global sum of all ecosystems. It is the zone of life on Earth, a closed system, and largely self-regulating.

2. **Identifying the Components of the Biosphere:**
- The biosphere consists of both biotic (living) and abiotic (non-living) components.
- Biotic components include all living organisms such as plants, animals, and humans.
- Abiotic components include non-living elements such as water, air, soil, and minerals.

3. **Analyzing the Options Given:**
- **Option 1:** "In which individuals interact with each other" - This option reflects the interactions among living organisms and their environment.
- **Option 2:** "By which life originated" - This is not a definition of the biosphere.
- **Option 3:** "The name of a bird" - This is irrelevant to the definition of biosphere.
- **Option 4:** "Organic compound by which life diminishes" - This does not accurately describe the biosphere.

4. **Choosing the Correct Answer:**
- The most accurate definition of the biosphere is found in **Option 1**, as it encompasses the interactions between living organisms and their environment, which is a fundamental aspect of the biosphere.

5. **Conclusion:**
- Therefore, the correct answer is: "In which individuals interact with each other."

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