The term biosphere, hydrosphere and atmosphere

Options

A. In lithosphere, hydrosphere and atomosphere
B. In lithosphere and hydrosphere
C. In hydrosphere
D. On lithosphere.

Answer

### Step-by-Step Solution:

1. **Understanding the Terms**:
- **Biosphere**: The biosphere is the global sum of all ecosystems. It is the zone of life on Earth, including all living organisms (plants, animals, microorganisms) and their interactions with the environment.
- **Hydrosphere**: This refers to all the water bodies on Earth, including oceans, rivers, lakes, and even water vapor in the atmosphere. It encompasses all aquatic life.
- **Atmosphere**: The atmosphere is the layer of gases surrounding the planet. It is essential for life as it provides oxygen and protects living organisms from harmful solar radiation.

2. **Identifying the Third Sphere**:
- The question asks for the third term that, along with the biosphere and hydrosphere, completes the environmental spheres.
- The three main spheres that interact with the biosphere are the hydrosphere (water), atmosphere (air), and lithosphere (land).

3. **Defining Lithosphere**:
- **Lithosphere**: This term refers to the rigid outer layer of the Earth, which includes the crust and the upper mantle. It is where terrestrial life exists, including soil, rocks, and landforms.

4. **Conclusion**:
- Therefore, the complete set of terms is: **Biosphere, Hydrosphere, and Lithosphere**.

### Final Answer:
The term that completes the set with biosphere and hydrosphere is **lithosphere**.

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