Question
Recall and enlist some better house keeping practices.
✓
Answer
We must minimise and manage waste at our houses before its disposal in the following manner:
- Cooking oil and fats should not be thrown down the drain. They can harden and block the pipes. In an open drain the fats clog the soil pores reducing its effectiveness in filtering water. Throw oil and fats in the dustbin.
- Used tealeaves, solid food remains, soft toys, cotton, sanitary towels, etc., should also be thrown in the dustbin. These wastes choke the drains. They do not allow free flow of oxygen. This hampers the degradation process.
- The chemicals like paints, solvents, insecticides, medicines and motor oils should $1$ State the role of screen bars in wastewater treatments, not be thrown in drains as they kill helpful $2$ Chlorination makes water fit for human consumption. How? microbes which digest the organic waste.
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