1. Which of the following is a primary source of indoor air pollution?

a) Radon gas
b) Sulfur dioxide
c) Nitrogen oxides
d) Ozone

2. The depletion of the ozone layer is primarily caused by:

a) Carbon dioxide
b) Chlorofluorocarbons (CFCs)
c) Methane
d) Nitrous oxide

3. Which of the following is a consequence of global warming?

a) Rising sea levels
b) Decreasing temperatures
c) Increased forest cover
d) Reduced biodiversity

4. The process of converting waste materials into reusable materials is called:

a) Incineration
b) Recycling
c) Landfilling
d) Composting

5. Which of the following is a non-point source of water pollution?

a) Industrial discharge
b) Sewage treatment plants
c) Agricultural runoff
d) Oil spills

6. The Kyoto Protocol primarily focuses on:

a) Reducing greenhouse gas emissions
b) Phasing out ozone-depleting substances
c) Combating desertification
d) Protecting biodiversity

7. Which of the following is a major cause of soil erosion?

a) Afforestation
b) Overgrazing
c) Crop rotation
d) Terracing

8. The term ‘ecosystem’ refers to:

a) A community of plants only
b) A community of animals only
c) A community of living organisms and their environment
d) A community of microorganisms only

9. Which of the following is a renewable resource?

a) Coal
b) Petroleum
c) Wind
d) Natural gas

10. The Paris Agreement aims to:

a) Limit global temperature rise to well below 2°C
b) Phase out ozone-depleting substances
c) Combat desertification
d) Protect marine ecosystems
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