What is crop rotation and why is it important.

Explanation

### Step-by-Step Solution:

1. **Definition of Crop Rotation**:
- Crop rotation is an agricultural practice where different types of crops are grown in the same area across different seasons. For example, in one season, a farmer might grow wheat, and in the next season, they might grow a legume crop like peas.

2. **Process of Crop Rotation**:
- In the first season, a crop that consumes a lot of nitrogen, such as wheat or rice, is planted. These crops deplete the nitrogen levels in the soil.
- In the second season, a different type of crop, particularly legumes, is planted. Legumes have nitrogen-fixing bacteria in their roots that help restore nitrogen levels in the soil.
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