What is irrigation? Describe two methods of irrigation which conserve water.

Explanation

**Step-by-Step Solution:**

1. **Definition of Irrigation:**
- Irrigation is the process of supplying water to crops to help them grow. It involves providing water at specific intervals based on the needs of the crops, the season, and the type of soil.

2. **Sources of Irrigation:**
- Water for irrigation can come from various sources, including wells, canals, rivers, and lakes.

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