State any three points of difference between manures and fertilizers.

Explanation

### Step-by-Step Text Solution

1. **Definition and Source**:
- **Manures**: Manures are organic substances that are prepared from the decomposition of plant and animal waste. They are typically made in the fields and are rich in organic matter.
- **Fertilizers**: Fertilizers are chemical substances that are manufactured in factories. They contain specific nutrients that are essential for plant growth.

2. **Physical Properties**:
- **Manures**: Manures are usually bulky and heavier, making them more difficult to transport. They often require more effort to apply to the fields.
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