🌍 Class 9 Science - Environmental Management (Important Q&A)

Environmental Management

Q1. What is environmental management?
A. The planned management of human activities to prevent, reduce, or control environmental damage.
Q2. Name any two renewable natural resources.
A. Solar energy and forests.
Q3. Name any two non-renewable natural resources.
A. Coal and petroleum.
Q4. What is sustainable development?
A. Development that meets the needs of the present without compromising the ability of future generations to meet theirs.
Q5. What are biodegradable pollutants?
A. Pollutants that can be broken down by natural processes, e.g., food waste.
Q6. What are non-biodegradable pollutants?
A. Pollutants that cannot be broken down naturally, e.g., plastics.
Q7. Name any two major causes of deforestation.
A. Urbanization and timber extraction.
Q8. State two effects of deforestation.
A. Loss of biodiversity and soil erosion.
Q9. What is afforestation?
A. Planting trees in an area where there were no previous forests.
Q10. What is reforestation?
A. Planting trees in a deforested area.
Q11. What is biodiversity?
A. The variety of living organisms in a particular area.
Q12. Name two methods of water conservation.
A. Rainwater harvesting and drip irrigation.
Q13. What is rainwater harvesting?
A. Collecting and storing rainwater for future use.
Q14. What is composting?
A. The process of converting organic waste into manure by microbial activity.
Q15. Name two causes of air pollution.
A. Vehicle emissions and industrial smoke.
Q16. State two harmful effects of air pollution.
A. Respiratory diseases and global warming.
Q17. Name two causes of water pollution.
A. Industrial effluents and sewage disposal.
Q18. Name two harmful effects of water pollution.
A. Spread of waterborne diseases and loss of aquatic life.
Q19. What is global warming?
A. The gradual increase in the Earth's average temperature due to greenhouse gases.
Q20. Name any two greenhouse gases.
A. Carbon dioxide and methane.
Q21. What is ozone depletion?
A. The thinning of the ozone layer due to chemicals like CFCs.
Q22. Name one harmful effect of ozone depletion.
A. Increased UV radiation leading to skin cancer.
Q23. What is the 3Rs principle?
A. Reduce, Reuse, Recycle.
Q24. What is eco-restoration?
A. The process of assisting in the recovery of degraded ecosystems.
Q25. Name two endangered species in India.
A. Bengal tiger and Indian rhinoceros.
Q26. What is environmental impact assessment (EIA)?
A. A process to evaluate the potential environmental effects of a proposed project.
Q27. Name one act related to environmental protection in India.
A. The Environment Protection Act, 1986.
Q28. What is carbon footprint?
A. The total amount of greenhouse gases produced directly and indirectly by human activities.
Q29. Name two renewable energy sources that help reduce pollution.
A. Solar energy and wind energy.
Q30. Give two ways to manage e-waste.
A. Recycling and safe disposal through certified facilities.