B. Very short answer type questions
- 1. Define the word pollution.
The introduction of harmful substances into the environment. - 2. Name the different types of pollution.
Air, water, soil, noise, and light (photo) pollution. - 3. What are the impacts of noise pollution?
Causes hearing damage, high stress, and sleep disruption. - 4. What do you know about the photo pollution?
Excessive, disruptive use of artificial outdoor light.
C. Short answer type questions
- 1. Human beings are the major threat to the environment. Do you agree with the statement? Give reason to support your answer.
Yes. Activities like deforestation and burning fossil fuels destroy ecosystems. - 2. Suggest any five measures to control environmental pollution.
- Plant more trees (afforestation).
- Practice the 3 Rs: Reduce, Reuse, Recycle.
- Shift to renewable energy (solar/wind).
- Properly treat industrial waste.
- Use public transport to limit emissions.
- 3. Give a short account on the water pollution.
Contamination of water bodies by sewage and toxic chemicals, killing marine life. - 4. What are the main sources of land and air pollution?
- Air: Vehicle exhaust and factory smoke.
- Land: Plastic waste and chemical fertilizers.
D. Write down the affects of the following
- 1. Photo pollution
Disrupts wildlife behavior and human sleep cycles. - 2. Water pollution
Spreads waterborne diseases and destroys aquatic ecosystems. - 3. Soil pollution
Reduces crop fertility and contaminates underground water.