1. Which gas is primarily responsible for global warming?

a) Oxygen

b) Nitrogen

c) Carbon dioxide

d) Hydrogen

2. What is the most abundant greenhouse gas in Earth’s atmosphere?

a) Methane

b) Water vapour

c) Nitrous oxide

d) Ozone

3. Which of the following is a non-renewable resource?

a) Solar energy

b) Wind energy

c) Coal

d) Tidal energy

4. The ozone layer protects us from:

a) Infrared rays

b) Gamma rays

c) Ultraviolet rays

d) Radio waves

5. Which country emits the most carbon dioxide annually (as of recent data)?

a) India

b) Russia

c) China

d) USA

6. Deforestation can lead to soil erosion.

7. Plastic is biodegradable.

8. The Kyoto Protocol is related to climate change.

9. Rainwater harvesting helps in water conservation.

10. Coral reefs are found only in freshwater bodies.

11. What is biodiversity?

12. Mention one harmful effect of air pollution on human health.

13. Name one renewable and one non-renewable source of energy.

14. What is composting?

15. Suggest one daily habit that can help reduce environmental pollution.