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Q8:
What measures, as an individual, would you take to reduce environmental pollution?
Solution :
Theoretical Foundation: Principles of Environmental Stewardship
The reduction of environmental pollution at an individual level is governed by the 3R Hierarchy (Reduce, Reuse, Recycle) and the principles of Sustainable Development. These measures target the reduction of carbon footprints, the minimization of non-biodegradable waste, and the conservation of natural resources [Per the Environment (Protection) Act, 1986].
Step 1: Mitigation of Solid Waste and Non-Biodegradable Accumulation
- Waste Segregation: Implement source-level segregation into biodegradable (organic) and non-biodegradable (inorganic) waste. This facilitates effective composting and secondary recycling processes [By Waste Management Rules, 2016].
- Elimination of Single-Use Plastics: Replace synthetic polymers ($C_nH_{2n}$) with biodegradable alternatives like jute, cloth, or recycled paper to prevent long-term soil and marine pollution.
- Composting: Convert domestic organic waste into vermicompost, thereby reducing the burden on municipal landfills and curbing $CH_4$ emissions from anaerobic decomposition.
Step 2: Air Quality Management and Energy Conservation
- Transition to Green Transit: Utilize public transportation, carpooling, or non-motorized transport (bicycles) to reduce the emission of greenhouse gases such as $CO_2$, $NO_x$, and particulate matter ($PM_{2.5}$).
- Energy Efficiency: Transition to LED lighting and Star-rated electrical appliances to minimize the demand for electricity, which is predominantly generated by the combustion of fossil fuels in thermal power plants.
- Renewable Integration: Installation of solar photovoltaic cells for water heating or lighting, reducing reliance on the national grid.
Step 3: Water Conservation and Chemical Footprint Reduction
- Water Harvesting: Implement rainwater harvesting systems to recharge groundwater levels and reduce dependency on treated water, which requires energy-intensive processing.
- Organic Consumption: Favor organic produce to minimize the entry of pesticides, synthetic fertilizers, and herbicides into the local ecosystem, preventing eutrophication in nearby water bodies [Ecological principle of Biomagnification].
- Phasing out Chemicals: Avoid the use of household cleaners containing hazardous volatile organic compounds (VOCs) or chlorofluorocarbons (CFCs) where applicable.
Visual Representation: The Impact of Individual Choices
Analytical Summary Table
| Pollution Category | Individual Action | Scientific Outcome |
|---|---|---|
| Air | Carpooling/Cycling | Reduction in $NO_x$ and $PM$ levels |
| Soil | Waste Segregation | Prevention of toxic leachate infiltration |
| Water | Rainwater Harvesting | Restoration of local aquifers |
Final Solution: As an individual, the most effective measures to reduce environmental pollution involve strict adherence to the 3R (Reduce, Reuse, Recycle) protocol, transitioning to sustainable energy sources, opting for public/non-motorized transport to lower carbon emissions, and practicing decentralized waste management to restore ecological balance.
More Questions from Class 12 Biology Environmental Issues EXERCISES
- Q1: What are the various constituents of domestic sewage? Discuss the effects of sewage discharge on a river.
- Q1: What are the various constituents of domestic sewage? Discuss the effects of sewage discharge on a river.
- Q2: List all the wastes that you generate, at home, school or during your trips to other places. Could you very easily reduce the generation of these wastes? Which would be difficult or rather impossible to reduce?
- Q2: List all the wastes that you generate, at home, school or during your trips to other places. Could you very easily reduce the generation of these wastes? Which would be difficult or rather impossible to reduce?
- Q3: Discuss the causes and effects of global warming. What measures need to be taken to control global warming?
- Q3: Discuss the causes and effects of global warming. What measures need to be taken to control global warming?
- Q4: Match the items given in column A and B:
- Q4: Match the items given in column A and B: Column A Column B (a) Catalytic converter (i) Particulate matter (b) Electrostatic precipitator (ii) Carbon monoxide and nitrogen oxides (c) Earmuffs (iii) High noise level (d) Landfills (iv) Solid wastes
- Q5(a): Write critical notes on the following: (a) Eutrophication
- Q5(a): Write critical notes on the following: (a) Eutrophication
- Q5(b): Write critical notes on the following: (b) Biological magnification
- Q5(b): Write critical notes on the following: (b) Biological magnification
- Q5(c): Write critical notes on the following: (c) Groundwater depletion and ways for its replenishment
- Q5(c): Write critical notes on the following: (c) Groundwater depletion and ways for its replenishment
- Q6: Why does ozone hole form over Antarctica? How will enhanced ultraviolet radiation affect us?
- Q6: Why does ozone hole form over Antarctica? How will enhanced ultraviolet radiation affect us?
- Q7: Discuss the role of women and communities in protection and conservation of forests.
- Q7: Discuss the role of women and communities in protection and conservation of forests.
- Q8: What measures, as an individual, would you take to reduce environmental pollution?
- Q9(a): Discuss briefly the following: (a) Radioactive wastes
- Q9(a): Discuss briefly the following: (a) Radioactive wastes
- Q9(b): Discuss briefly the following: (b) Defunct ships and e-wastes
- Q9(b): Discuss briefly the following: (b) Defunct ships and e-wastes
- Q9(c): Discuss briefly the following: (c) Municipal solid wastes
- Q9(c): Discuss briefly the following: (c) Municipal solid wastes
- Q10: What initiatives were taken for reducing vehicular air pollution in Delhi? Has air quality improved in Delhi?
- Q10: What initiatives were taken for reducing vehicular air pollution in Delhi? Has air quality improved in Delhi?
- Q11(a): Discuss briefly the following: (a) Greenhouse gases
- Q11(a): Discuss briefly the following: (a) Greenhouse gases
- Q11(b): Discuss briefly the following: (b) Catalytic converter
- Q11(b): Discuss briefly the following: (b) Catalytic converter
- Q11(c): Discuss briefly the following: (c) Ultraviolet B
- Q11(c): Discuss briefly the following: (c) Ultraviolet B
CBSE Solutions for Class 12 Biology Environmental Issues
Chapters in CBSE - Class 12 Biology
- Reproduction in Organisms
- Human Reproduction
- Reproductive Health
- Principles of Inheritance and Variation
- Molecular Basis of Inheritance
- Evolution
- Human Health and Disease
- Strategies for Enhancement in Food Production
- Microbes in Human Welfare
- Biotechnology: Principles and Processes
- Biotechnology and Its Applications
- Organisms and Populations
- Ecosystem
- Biodiversity and Conservation
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