Subject: General Science
Book: NCERT Science Class 7
Proper disposal of wastewater prevents pollution.
- **Sewage Treatment**:
- Removing waste from water before releasing it.
- **Water Pollution Causes**:
- Industrial waste, sewage.
- **Prevention**:
- Proper drainage, water purification.
**Possible Exam Questions:**
1. How does wastewater treatment work?
2. What are the causes of water pollution?
3. How can we reduce sewage pollution?
4. Why is water purification necessary?
5. Discuss sustainable wastewater management.
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