• At an individual level, how can you help to reduce air pollution
• Clear, transparent water is always fit for drinking. Comment.
• You are a member of the municipal body of your town. Make a list of measures that would help your town to ensure the supply of clean water to all its residents.
• Explain the differences between pure air and polluted air.
• Explain circumstances leading to acid rain. How does acid rain affect us
• Which of the following is not a greenhouse gas

         (a) carbon dioxide (b) sulphur dioxide (c) methane (d) nitrogen

• Describe the ‘Green House Effect’ in your own words.
• Prepare a brief speech on global warming.
• Describe the threat to the beauty of the Taj Mahal.
• Why does the increased level of nutrients in the water affect the survival of aquatic organisms?