1. What are the different ways in which water gets contaminated?
Ans:
The different ways in which water gets contaminated are as follows:
i) Industrial waste: Harmful chemical waste released by industries into water bodies pollutes the water.
ii) Sewage waste: Waste materials from kitchens, laundry, and toilets flow into water sources, leading to contamination.
iii) Agricultural chemicals: Excessive use of pesticides and fertilizers in farming is carried to water bodies by rain or floods, causing water pollution.
2. At an individual level, how can you help reduce air pollution?
Ans:
We can take the following steps to help reduce air pollution:
i) Use public transport instead of personal cars whenever possible.
ii) Avoid burning garbage and ensure proper disposal of waste.
iii) For short distances, prefer walking or cycling instead of using vehicles.
iv) Regularly maintain household chimneys and vehicles to control emissions.
v) Use cleaner fuels such as LPG or CNG instead of diesel and petrol in vehicles.