21. What is the main cause of indoor air pollution?
a) Air fresheners
b) Smoking
c) Kitchen appliances
d) Forest fires
Answer: b) Smoking
22. Which of the following is an example of solid waste pollution?
a) Nuclear power plants
b) Recycling centers
c) Landfills
d) Solar panels
Answer: c) Landfills
23. What are the effects of plastic pollution on marine life?
a) Increased lifespan
b) Better reproductive rates
c) Entanglement and ingestion
d) Enhanced communication
Answer: c) Entanglement and ingestion
24. What is the purpose of the Montreal Protocol?
a) To reduce carbon emissions
b) To minimize plastic waste
c) To protect the ozone layer
d) To control noise pollution
Answer: c) To protect the ozone layer
25. Which of the following is an example of light pollution?
a) Moonlight
b) Solar energy
c) Streetlights
d) Stars
Answer: c) Streetlights
