Unit6 - Subjective Questions
CHE110 • Practice Questions with Detailed Answers
Discuss the major impacts of rapid human population growth on the environment.
Rapid human population growth exerts immense pressure on the environment. The relationship can be described by the IPAT equation: (Impact = Population × Affluence × Technology).
Major Impacts Include:
- Resource Depletion: Increasing demand for food, water, and energy leads to the over-extraction of non-renewable resources (fossil fuels) and the depletion of renewable resources (groundwater, forests).
- Deforestation: Expansion of agricultural land and urbanization necessitates cutting down forests, leading to loss of biodiversity and disruption of the carbon cycle.
- Pollution: Higher population density results in increased generation of solid waste, sewage, and industrial effluents, causing air, water, and soil pollution.
- Climate Change: Increased consumption leads to higher greenhouse gas emissions (, methane), contributing to global warming.
- Loss of Habitat: Urban sprawl and infrastructure development fragment natural habitats, threatening wildlife survival.
Explain the concept of Environmental Ethics and distinguish between Anthropocentrism and Ecocentrism.
Environmental Ethics is a branch of philosophy that considers the moral relations between human beings and their natural environment. It challenges the notion that humans have absolute dominion over nature.
Distinction:
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Anthropocentrism (Human-centered):
- Believes that the environment has value only insofar as it is useful to humans.
- Nature is seen as a resource bank for human consumption.
- Focus: Human health, economic growth, and welfare.
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Ecocentrism (Nature-centered):
- Believes that nature has intrinsic value, independent of its utility to humans.
- Every species and ecosystem has a moral right to exist.
- Focus: Ecosystem integrity, biodiversity, and sustainability.
Describe the role of Public Awareness in environmental conservation.
Public awareness is the cornerstone of environmental conservation because legislation alone cannot save the environment without community participation.
Key Roles:
- Understanding Complexity: It helps people understand complex issues like global warming, ozone depletion, and biodiversity loss.
- Changing Consumption Patterns: Aware citizens can shift towards sustainable lifestyles (e.g., reducing plastic use, saving water).
- Pressure Groups: An informed public acts as a watchdog, pressuring governments and industries to adopt eco-friendly policies.
- Grassroots Action: Awareness fosters local movements (like clean-up drives or tree plantations) that have immediate local impacts.
- Legal Enforcement: Laws are only effective when citizens report violations (e.g., reporting poaching or illegal dumping).
Analyze the symbiotic relationship between Tribal Populations and the environment, citing their role in conservation.
Tribal populations have historically lived in harmony with nature, possessing deep traditional ecological knowledge.
Role in Conservation:
- Sustainable Resource Use: Tribes practice shifting cultivation (when done traditionally) and collect minor forest produce without destroying the parent plant, ensuring regeneration.
- Sacred Groves: Many tribes protect patches of forests as Sacred Groves (e.g., Devarakadu in Karnataka), believing deities reside there. These areas act as gene pools for rare biological species.
- Ethnobotanical Knowledge: They possess vast knowledge of medicinal plants, helping in the preservation of specific flora.
- Totemism: Many tribes hold specific animals or plants as totems (sacred symbols), strictly prohibiting their hunting or felling, effectively acting as species conservators.
Write a detailed note on the Bishnoi Movement of Rajasthan.
The Bishnoi Movement is one of the earliest recorded environmental movements in history, dating back to 1730 AD.
- Origin: Founded by Guru Jambheshwar, the Bishnoi sect follows 29 principles, many of which focus on protecting nature (banning the killing of animals and cutting of green trees).
- The Incident (1730 AD): The King of Jodhpur ordered soldiers to cut down Khejri trees in Khejarli village for wood to build a palace.
- Amrita Devi's Sacrifice: A woman named Amrita Devi hugged a tree to protect it, stating, "Sar santey rukh rahe to bhi sasto jaan" (If a tree is saved even at the cost of one's head, it is worth it).
- Outcome: 363 Bishnois sacrificed their lives protecting the trees. The King eventually apologized and banned tree felling in Bishnoi areas.
- Significance: This movement inspired the modern Chipko movement.
Evaluate the Chipko Movement: its origins, leadership, and impact on forest policies in India.
The Chipko Movement (from the Hindi word 'Chipko' meaning 'to hug') began in the early 1970s in the Garhwal Himalayas (Uttarakhand).
- Cause: The government allotted forest land to sports goods manufacturers while denying locals rights to use timber for agricultural tools.
- Process: Local women, led by Gaura Devi, hugged trees to prevent loggers from cutting them. Other key leaders included Sunderlal Bahuguna and Chandi Prasad Bhatt.
- Philosophy: Non-violent resistance (Satyagraha) to protect forests as they provide "soil, water, and pure air" (the slogan of the movement).
- Impact:
- Resulted in a 15-year ban on felling green trees in the Himalayan forests (1980).
- Highlighted the role of women as primary stakeholders in environmental management.
- Shifted focus from timber-oriented forestry to ecosystem-oriented forestry.
Compare and contrast the Chipko Movement and the Appiko Movement.
Similarities:
- Methodology: Both used the non-violent method of hugging trees to prevent felling.
- Objective: Conservation of natural forests and opposing commercial exploitation.
- Community: Both were grassroots movements involving strong local participation.
Differences:
| Feature | Chipko Movement | Appiko Movement |
|---|---|---|
| Region | North India (Garhwal Himalayas) | South India (Karnataka - Uttara Kannada) |
| Timeline | Started early 1970s | Started in 1983 |
| Leader | Sunderlal Bahuguna, Chandi Prasad Bhatt | Pandurang Hegde |
| Slogan | Ecology is permanent economy | Ulisu (Save), Belesu (Grow), Balasu (Use rationally) |
| Context | Prevention of logging by sports companies | Prevention of monoculture (Teak/Eucalyptus) & industrial felling |
Discuss the Silent Valley Movement. What were the main arguments against the proposed project?
The Silent Valley Movement (1970s-80s) was a campaign to save the tropical moist evergreen forests in the Palakkad district of Kerala.
- The Threat: The Kerala State Electricity Board (KSEB) proposed a hydroelectric dam across the Kunthipuzha River, which flows through Silent Valley.
- Ecological Significance: Silent Valley is one of the last remaining rainforests in India, home to the endangered Lion-tailed Macaque ().
- Arguments Against the Dam:
- Biodiversity Loss: Submergence would destroy unique flora and fauna found nowhere else.
- Climate Regulation: Destruction of the rainforest would alter the local microclimate.
- Alternative Energy: Activists argued that energy needs could be met through efficiency and other sources without destroying a virgin forest.
- Outcome: The project was cancelled in 1983, and Silent Valley was declared a National Park in 1985.
Explain the controversy surrounding the Narmada Bachao Andolan (NBA).
Narmada Bachao Andolan is an ongoing social movement against the construction of large dams across the Narmada River, specifically the Sardar Sarovar Dam in Gujarat.
Key Issues:
- Displacement: The dam submerges vast areas, displacing hundreds of thousands of tribal people (Adivasis) and farmers.
- Rehabilitation: Activists, led by Medha Patkar and Baba Amte, argued that the resettlement and rehabilitation (R&R) packages were inadequate and poorly implemented.
- Environmental Cost: Submergence of prime agricultural land and destruction of forest ecosystems upstream.
- Benefits vs. Costs: Critics questioned the projected irrigation and power generation benefits versus the massive human and environmental costs.
Significance: It sparked a global debate on the "Big Dam" development model and led to the World Bank withdrawing funding for the project.
What are the primary objectives of the Environment (Protection) Act, 1986?
Enacted in the wake of the Bhopal Gas Tragedy, the Environment (Protection) Act, 1986 (EPA) is an 'umbrella legislation' designed to provide a framework for the coordination of central and state authorities.
Primary Objectives:
- Protection and Improvement: To protect and improve the quality of the environment (air, water, and land).
- Safety Hazards: To lay down procedures and safeguards for the handling of hazardous substances.
- Standards: To establish standards for the emission or discharge of environmental pollutants.
- Authority: To empower the Central Government to take all necessary measures to protect the environment, including closing down industries that violate norms.
- Punishment: To provide for strict penalties for those who endanger the environment.
Describe the Tehri Dam Conflict. What were the specific geological and social concerns?
The Tehri Dam Conflict involved opposition to the construction of a multi-purpose dam on the Bhagirathi River in Uttarakhand.
Specific Concerns:
- Seismic Sensitivity: The dam is located in a highly active seismic zone (Zone V) of the Himalayas. Critics, including seismologists, feared that a major earthquake could damage the dam, causing a catastrophic flood downstream (affecting cities like Rishikesh and Haridwar).
- Reservoir Induced Seismicity (RIS): Fear that the sheer weight of the water in the reservoir could trigger earthquakes.
- Displacement: The project submerged the historic town of Tehri and over 100 villages, displacing over 100,000 people.
- Cultural Loss: The dam affects the free flow of the Ganges (Bhagirathi), which has spiritual significance for Hindus.
Sunderlal Bahuguna undertook several long fasts to protest against the dam, highlighting these risks.
Write a note on the Jungle Bachao Andolan.
Jungle Bachao Andolan (Save the Forest Movement) began in the early 1980s in the Singhbhum district of Bihar (now in Jharkhand).
- Trigger: The government decided to replace the natural Sal forests (which are valuable to tribals for food, medicine, and timber) with commercial Teak plantations (monoculture).
- Tribal Reaction: The tribal communities opposed this because Teak does not provide the range of minor forest produce that Sal does, effectively threatening their livelihood.
- Spread: The movement spread to Odisha and Jharkhand.
- Significance: It highlighted the conflict between government forest policies focused on commercial revenue versus the subsistence needs of local tribal populations.
Discuss the Wildlife (Protection) Act, 1972 and its role in conservation.
The Wildlife (Protection) Act, 1972 is a landmark legislation in India aimed at protecting wild animals, birds, and plants.
Key Provisions & Role:
- Schedules of Protection: The Act classifies wildlife into schedules ( to ). Schedule I and II provide absolute protection, and offenses regarding these animals invite the highest penalties (e.g., Tigers, Lions).
- Protected Areas: It empowers the government to declare areas as Sanctuaries, National Parks, and Closed Areas where human activity is strictly restricted.
- Prohibition of Hunting: It imposes a ban on hunting of specified wild animals.
- Trade Control: It regulates and restricts the trade and commerce in wild animals, animal articles, and trophies.
- Bodies Established: It led to the formation of the National Board for Wildlife and State Boards to advise on conservation policy.
How does Human Health correlate with environmental quality? Give examples involving water and air.
Human health is intrinsically linked to the quality of the environment. Environmental degradation directly leads to disease and reduced life expectancy.
Correlations:
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Water Quality:
- Contaminated water is a vector for pathogens.
- Diseases: Cholera, Typhoid, Dysentery, and Hepatitis A.
- Chemical pollution: Presence of Arsenic or Fluoride in groundwater causes Arsenicosis and Fluorosis.
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Air Quality:
- Pollutants like Particulate Matter (, ), , and damage the respiratory system.
- Diseases: Asthma, Chronic Obstructive Pulmonary Disease (COPD), Lung Cancer, and cardiovascular issues.
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Vector-Borne Diseases: Stagnant water and changing climates facilitate the breeding of mosquitoes, leading to Malaria and Dengue.
Explain the Forest (Conservation) Act, 1980.
The Forest (Conservation) Act, 1980 was enacted to check the indiscriminate diversion of forest land for non-forest purposes.
Key Features:
- Restriction on De-reservation: State governments cannot de-reserve any reserved forest or use forest land for non-forest purposes (like agriculture, industry, or housing) without the prior approval of the Central Government.
- Advisory Committee: The Central Government constitutes a committee to advise on matters regarding the grant of approval for forest clearance.
- Compensatory Afforestation: If forest land is diverted, the user agency must pay for afforestation on alternative land to compensate for the loss.
- Impact: It significantly slowed down the rate of deforestation caused by developmental projects.
Discuss the Water (Prevention and Control of Pollution) Act, 1974.
This was the first major environmental legislation in India focused specifically on pollution control.
Key Aspects:
- Institutional Framework: It established the Central Pollution Control Board (CPCB) and State Pollution Control Boards (SPCBs).
- Powers:
- SPCBs can lay down standards for sewage and trade effluents.
- They can inspect industrial plants and sample effluents.
- No industry can discharge effluents into water bodies without consent from the board.
- Penalties: It provides for fines and imprisonment for non-compliance.
- Objective: To maintain or restore the wholesomeness of water and to prevent, control, and abate water pollution.
What are Cultural Practices for environmental conservation? Give three examples.
Cultural practices refer to traditional customs, rituals, and beliefs passed down through generations that promote the protection of nature.
Examples:
- Sacred Groves: Patches of forest dedicated to local deities (e.g., Sacred Groves of Meghalaya or Kavu in Kerala). Hunting and logging are strictly prohibited here, preserving biodiversity.
- Sacred Plants and Animals: Plants like Tulsi, Peepal, and Banyan are worshipped and rarely cut. Animals like cows, snakes (Nag Panchami), and monkeys are revered, ensuring their protection.
- Traditional Agriculture: Practices like crop rotation, mixed cropping, and the use of organic manure (cow dung) maintain soil fertility without chemical fertilizers, preserving the soil ecosystem.
Derive the connection between Women, Child Welfare, and the Environment.
Women and children are often the most vulnerable to environmental degradation, particularly in developing nations.
The Connection:
- Resource Collection: In rural areas, women are primarily responsible for collecting water and firewood. Environmental degradation (drying springs, deforestation) increases their workload, leading to health issues and less time for childcare or education.
- Indoor Air Pollution: The use of biomass fuels (wood, dung) in poorly ventilated kitchens exposes women and children to high levels of smoke, causing acute respiratory infections.
- Waterborne Diseases: Children are most susceptible to diarrhea and other diseases caused by polluted water, which contributes to high infant mortality rates.
- Toxins: Pregnant women exposed to environmental toxins (mercury, lead, pesticides) face risks of birth defects and developmental delays in their children.
Explain the Air (Prevention and Control of Pollution) Act, 1981.
Enacted to implement the decisions of the Stockholm Conference (1972), this Act aims to preserve air quality.
Key Features:
- Scope: Defines air pollutants and covers noise pollution (added in 1987 amendment).
- Air Pollution Control Areas: State governments, in consultation with SPCBs, can declare certain areas as air pollution control areas where specific industrial operations are prohibited.
- Emission Standards: Industries must ensure that emissions do not exceed the standards laid down by the SPCBs.
- Consent: Industries operating in control areas must obtain consent from the State Board.
- Power to Entry: State Board officials have the right to enter and inspect industrial units to ensure compliance.
What is the role of Information Technology (IT) in Environment and Human Health?
Information Technology plays a pivotal role in monitoring, managing, and disseminating information regarding the environment and health.
Applications:
- Remote Sensing & GIS: Satellites provide data on forest cover, water resources, and urban sprawl (e.g., Google Earth). GIS helps in mapping disease outbreaks (epidemiology).
- Environmental Monitoring: IoT sensors monitor real-time air quality (AQI) and water quality, alerting authorities and the public to hazardous levels.
- Databases: Systems like ENVIS (Environmental Information System) in India store vast amounts of data on biodiversity and pollution for policy-making.
- Telemedicine: IT enables healthcare access in remote areas affected by environmental hazards.
- Modelling: Supercomputers model climate change scenarios to predict future impacts on health and agriculture.