Thermal pollution is caused by

1. the discharge of fertilizer on the Water body
2. the discharge of domestic waste in the water body
3. the discharge of hot water of thermal power plants in the water body.
4. All the above

Which of the following is not a man-made source of radioactive pollutant?

1. Wastes from the nuclear power stations
2. Mining & processing of Uranium Ore
3. Cosmic rays
4. X-ray wastes

Which of the following is not a man-made source of air pollution?

1. Automobile pollution
2. Forest fires
3. Industrial pollution
4. Brick Kilns

Noise pollution is prevalent in towns and cities.