Why does the soil need to be turned and loosened?

Explanation

### Step-by-Step Solution:

1. **Definition of Ploughing**: The process of turning and loosening the soil is known as ploughing. It is the first step in preparing the soil for crop production.

2. **Aeration**: When the soil is turned and loosened, it increases the space between soil particles. This process allows for better aeration, which means that oxygen can mix more effectively with the soil.

3. **Root Penetration**: Loosening the soil enables plant roots to penetrate deeper into the ground. This deeper penetration is crucial for the roots to access essential nutrients and oxygen.

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