Q. Describe the 'Greenhouse effect' in your own words.

Q. 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.

Q. Why does the increased level of nutrients in the water affect the survival of aquatic organisms?

Q. At an individual level, how can you help reduce air pollution?

Q. What are the different ways in which water gets contaminated?

Q. Explain the circumstances leading to acid rain. How does acid rain affect us?

Q. Describe the threat to the beauty of the Taj Mahal.

Q. Which of the following is not a greenhouse gas?

1. Carbon dioxide
2. Methane
3. Nitrogen
4. Sulphur dioxide

Q. Clear and transparent water is always fit for drinking. Comment.

Q. Write a note on global warming.

Q. Explain the differences between pure air and polluted air.