Term wet deposition and dry deposition is generally used for :

Options

A. Deposition of soil
B. Deposition of organic matter in lake
C. `CO_(2)` accumulation (green house effect)
D. Acid rain

Answer

### Step-by-Step Solution:

1. **Understanding the Terms**:
- Wet deposition and dry deposition are terms used to describe how pollutants, particularly acids, are deposited from the atmosphere to the Earth's surface.

2. **Wet Deposition**:
- Wet deposition refers to the process where pollutants are removed from the atmosphere through precipitation. This includes rain, snow, fog, and hail.
- In this process, water vapor in the atmosphere can absorb acids (like sulfuric acid or nitric acid) and, when it precipitates, it brings these acids down to the ground, resulting in what is commonly known as acid rain.

3. **Dry Deposition**:
- Dry deposition, on the other hand, involves the settling of particles and gases from the atmosphere onto surfaces without the involvement of precipitation.
- This can include dust, smoke, and other gaseous pollutants that settle on surfaces such as soil, water bodies, and vegetation.

4. **Connection to Acid Rain**:
- Both wet and dry deposition contribute to the phenomenon of acid rain. Wet deposition brings acids directly through precipitation, while dry deposition allows for the accumulation of acidic particles and gases that can later be washed into water bodies during rainfall.

5. **Conclusion**:
- Therefore, the terms wet deposition and dry deposition are generally used in the context of acid deposition processes, particularly in relation to acid rain.