What is Ganga Action Plan? When and why was it launched?

Name any four pollutants which cause water pollution. State any three ways of controlling water pollution.

How do industries cause water pollution?

How can you help reduce air pollution at the individual level?

Explain the difference between pure air and polluted air.

What is 'greenhouse effect'? State its importance for us.

Name two greenhouse gases? Which one of them produces the maximum greenhouse effect?

What depletes the ozone layer in the atmosphere? What are the harmful effects of the depletion of ozone layer on us?

Name one source and one harmful effect of each of the following air pollutants:

(a) Sulphur dioxide

(b) Nitrogen oxides

(c) Carbon monoxide

(d) Chlorofluorocarbons (CFCs)

Explain why, even clear, transparent and odourless water may not always be safe for drinking.

Explain why, hot water released by power plants and industries is considered a pollutant.

Why does the increased level of nutrients (or fertilizers) in the lake water affect the survival of aquatic organisms (like fish)?

Explain how, the use of pesticides in agriculture causes water pollution.

Describe the threat to Taj Mahal monument due to air pollution.

State any two ways of controlling air pollution;

What-is potable water? Name any two methods to make water safe for drinking.

State two ways in which you conserve water at home by, preventing its wastage.