Number of earthworms found in one acre of land is approximately:-

Options

A. 500
B. 5000
C. 50000
D. 5 lakh

Answer

To determine the approximate number of earthworms found in one acre of land, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Area**:
- We start by recognizing that we are considering an area of 1 acre of land.

2. **Referencing Historical Data**:
- Historical data, specifically from Charles Darwin, indicates that a significant number of earthworms inhabit the soil.

3. **Finding the Approximate Number**:
- According to Darwin's observations, it has been reported that approximately 50,000 earthworms can be found in one acre of land.

4. **Understanding the Impact**:
- Earthworms play a crucial role in soil fertility. They contribute to the soil by depositing castings, which enhance the nutrient content and structure of the soil.

5. **Conclusion**:
- Therefore, based on Darwin's report, we conclude that the approximate number of earthworms in one acre of land is 50,000.

### Final Answer:
The number of earthworms found in one acre of land is approximately **50,000**.

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