Waste can be classified through various schemes, including:
1. **Physical State**: Solid, liquid, or gas.
2. **Hazardous Nature**: Hazardous or non-hazardous.
3. **Degradability**: Biodegradable or non-biodegradable.
4. **Composition**: Organic or inorganic.
5. **Frequency of Generation**: Continuous or intermittent.
### (ii) Four Types of Waste by Source (Origin)
1. **Domestic Waste**:
- **Definition**: This type of waste is generated from