What happens when rain falls on soil without vegetational cover?

Options

A. Rain water percolates in soil efficiently
B. rain water causes loss of surface soil
C. Rain water leads to fertility of the soil
D. Rain water does not cause any change in soil

Explanation

### Step-by-Step Solution:

1. **Understanding Vegetation Cover**:
- Vegetation cover refers to the plants and crops that grow on the soil surface. These plants play a crucial role in maintaining soil health.

2. **Role of Vegetation**:
- Plants have roots that bind the soil together, preventing it from being easily washed away by rain. This binding helps to reduce soil erosion.

3. **Impact of Rain on Soil Without Vegetation**:
- When rain falls on soil that lacks vegetation cover, the soil is more susceptible to erosion. The absence of plant roots means there is nothing to hold the soil in place.

4. **Soil Erosion**:
- As rainwater hits the bare soil, it can wash away the top layer of soil, which is often the most fertile. This process is known as soil erosion.

5. **Water Percolation**:
- Vegetation also aids in the percolation of water into deeper layers of the soil. Without plants, the water may not penetrate the soil effectively, leading to runoff instead of absorption.

6. **Conclusion**:
- Therefore, when rain falls on soil without vegetational cover, it leads to soil erosion and hampers the efficient percolation of water. The correct answer to the question is that rainwater causes the loss of surface soil.

### Final Answer:
When rain falls on soil without vegetational cover, it leads to the loss of surface soil due to erosion and hampers the percolation of water.

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