Natural Resources and Their Use Class 8 | NCERT Chapter 1 Solutions

Quick answer

Natural resources are useful materials and substances from nature. Renewable resources replenish if used sustainably, while non-renewables cannot be quickly replaced. Responsible stewardship limits overuse and pollution and protects fair access for future generations.

Key points

Resources must be technologically accessible, economically feasible and culturally acceptable.
Resources support life, materials and energy.
Renewables can be depleted if use exceeds regeneration.
Non-renewable ores and fossil fuels form over geological timescales.
Ecosystem functions provide benefits called ecosystem services.
Uneven resource distribution influences jobs, trade and conflicts.
The paradox of plenty means natural wealth alone does not ensure prosperity.
Stewardship protects ecosystems and future generations.

Use these notes alongside your current textbook. Check important formulas, worked answers and syllabus coverage with your teacher or official learning material.

Direct answer: Natural resources are useful materials and substances from nature. They can be classified by use and renewability. Sustainable stewardship protects their regeneration, limits pollution and considers fair access for present and future generations.

Why can a region rich in minerals remain poor? Why might groundwater run out although it is renewable? The answers connect geography, economics, ecology and social justice.

Official source: NCERT Exploring Society: India and Beyond, Part I, Chapter 1, Reprint 2026–27, printed pages 1–19. All five end-of-chapter questions are answered below. Additional questions are original practice.

What makes nature a resource?

A natural thing becomes a resource when people value and use it. The textbook identifies technological accessibility, economic feasibility and cultural acceptability. Oil deep under the sea may be too expensive to extract, while sacred groves may be protected by community values.

Categories by use

Resources essential for life include air, water and soil. Materials include timber, fibres, stone and metal ores. Energy sources include sunlight, wind, flowing water, coal and petroleum. Some resources have multiple uses.

Renewable and non-renewable resources

Solar energy, wind and sustainably managed forests are renewable. Coal, petroleum and metallic ore deposits are non-renewable on human timescales. Groundwater can become effectively exhausted when pumped faster than recharge. Renewable never means unlimited.

Restoration and regeneration

Restoration repairs damaged ecosystems; regeneration describes renewed growth and functioning. Decomposers break down fallen trees and return nutrients to soil. Protecting native forests and preventing pollution can support recovery.

Ecosystem functions and services

Photosynthesis, decomposition, pollination, water filtration and soil stabilisation are ecosystem functions. Their benefits to people, including oxygen production, food, cleaner water and erosion protection, are ecosystem services.

Uneven distribution and trade

Minerals, forests and water are unevenly distributed. Coal around Jharia and Raniganj, oil near Digboi and Mumbai High, and iron ore in Odisha and Karnataka illustrate geographical concentrations. Resources can create jobs and trade but also pollution, displacement and conflict.

The Kaveri river system involves Karnataka, Tamil Nadu, Kerala and Puducherry. The Brahmaputra crosses national borders. Water-sharing decisions must consider domestic needs, farming, ecological flows and fair governance.

Paradox of plenty

Resource wealth alone does not guarantee prosperity. Skills, capital, industry, infrastructure, governance and fair distribution help convert raw materials into broad development. Dependence on extraction without these supports can create a resource curse.

Stewardship and fair access

Stewardship means using resources responsibly for current and future generations. Compare who benefits, who bears environmental costs, how resources recover and whether poor communities can access clean air and safe water.

Punjab groundwater case

The textbook describes historical groundwater depletion linked to intensive irrigation of water-demanding crops and pumping incentives. Its June 2022 groundwater map and reported percentages are historical, not verified live 2026 figures. Rainwater harvesting, crop diversification and efficient irrigation can help.

Cement and cleaner building

Cement manufacturing releases carbon dioxide and can cause dust and other pollution. Improved controls, lower-emission formulations and safe context-appropriate alternative materials can reduce impacts. Structural safety remains essential.

Sikkim organic farming

The chapter presents Sikkim's organic-farming transition and a family caselet involving compost, crop diversity and natural pest management. The state was declared fully organic under its certification programme in 2016. Reported outcomes are historical textbook case-study claims, not universal guarantees.

Solar cooperation

Solar parks in Rajasthan illustrate renewable electricity generation. India and France launched the International Solar Alliance (ISA) in 2015. Solar infrastructure also requires thoughtful land use, material sourcing and grid planning.

Traditional knowledge and sustainability

The textbook describes Vrikshayurveda, soil-friendly cultivation, mulching, mixed cropping and community practices protecting resources. Evaluate traditional methods using evidence and adapt them to local conditions.

Comparison of resources

Resource	Type	Main concern
Sunlight	Renewable	Infrastructure impacts
Forests	Renewable if managed	Overharvesting
Groundwater	Recharge-dependent	Over-pumping
Coal	Non-renewable	Emissions and mining
Iron ore	Non-renewable deposit	Extraction damage

Case study comparison

Case	Issue	Response
Punjab	Groundwater depletion	Recharge and efficient irrigation
Sikkim	Farming sustainability	Organic inputs and diversity
Cement	Pollution	Cleaner processes
Kaveri	Shared water	Cooperation and allocation

Textbook Let’s Explore activities — model approaches

Everyday materials: trace a shirt, table and phone to cotton, wood, ores and petroleum. Regional study: record actual renewable resources and changes in your district using dated evidence. Non-renewable alternatives: compare fossil-fuel transport and renewable-powered options. Map activity: mark selected coal, oil, iron-ore and bauxite locations using Figure 1.11. Shared river activity: compare Kaveri and Brahmaputra users without oversimplifying disputes. Responsible production: evaluate cement and alternatives by safety, cost and pollution. Do not invent field observations or current statistics.

NCERT Questions and activities — full model solutions

Question 1. What can make a renewable resource effectively non-renewable, and what actions prevent it?

Explanation: Overuse faster than replenishment, such as over-pumping groundwater or cutting trees faster than regrowth, can exhaust supplies. Monitor withdrawals, harvest rainwater, replant native forests and reduce pollution.

Final answer: Unsustainable extraction can exhaust renewables; conservation and regeneration protect them.

Question 2. Name five ecosystem functions that benefit people.

Explanation: Photosynthesis produces organic matter and oxygen; pollination supports reproduction; decomposers recycle nutrients; wetlands filter some pollutants; vegetation stabilises soil.

Final answer: Photosynthesis, pollination, decomposition, water filtration and soil protection.

Question 3. Define renewable resources, distinguish them from non-renewable resources and explain protection with two examples.

Explanation: Renewables replenish through natural cycles within useful timescales; non-renewables form too slowly. Protect forests by controlled harvest and replanting. Protect groundwater by reducing pumping and improving recharge.

Final answer: Renewables regenerate if managed; sustainable forestry and groundwater management are two examples.

Question 4. Which cultural practices in your home or neighbourhood show mindful resource use?

Explanation: This is observation-based. Possible examples are repairing objects, avoiding food waste, reusing containers, saving water and protecting community trees. Students should replace examples with real local evidence.

Final answer: Sample answer: We repair usable items, avoid food waste and conserve water; adapt to actual observations.

Question 5. What considerations matter when producing goods for present use?

Explanation: Assess raw-material availability, energy and water consumption, worker safety, pollution, waste management, durability, repairability, affordability and future generations.

Final answer: Goods should be produced safely, fairly and with efficient resource use and minimal environmental harm.

Original practice questions and solutions

Question Practice 1. What three conditions make a natural resource usable?

Explanation: The textbook specifies access through technology, economic viability and cultural acceptance.

Final answer: Technological accessibility, economic feasibility and cultural acceptability.

Question Practice 2. Why is groundwater not always sustainably renewable?

Explanation: Extraction may exceed recharge for many years.

Final answer: Groundwater can be depleted.

Question Practice 3. What is the paradox of plenty?

Explanation: Natural wealth may not translate into development without institutions, industry and skills.

Final answer: Resource abundance alone does not guarantee prosperity.

Question Practice 4. How do ecosystem functions differ from services?

Explanation: Functions are natural processes; services are benefits people obtain from them.

Final answer: Process versus human benefit.

Question Practice 5. Why do shared rivers require cooperation?

Explanation: Upstream and downstream users have competing needs across boundaries.

Final answer: Fair agreements and monitoring are necessary.

Question Practice 6. Why can mining create both benefits and harms?

Explanation: It provides materials and jobs but may cause pollution, displacement and habitat loss.

Final answer: Economic gains must be balanced against social and ecological costs.

Question Practice 7. How can farmers protect soil?

Explanation: Crop rotation, compost, mulching and appropriate fertiliser use maintain soil structure and nutrients.

Final answer: Use soil-conserving farming practices.

Question Practice 8. Why is recycling metal important?

Explanation: It can reduce demand for newly mined non-renewable ores.

Final answer: Recycling conserves mineral resources.

Question Practice 9. What does the Punjab groundwater case teach?

Explanation: Short-term increases in crop production may depend on unsustainable pumping.

Final answer: Food security requires long-term water planning.

Question Practice 10. What does the Sikkim case illustrate?

Explanation: The textbook describes a transition toward certified organic farming with costs and benefits.

Final answer: Sustainable transitions need support and time.

Question Practice 11. Why is cement production environmentally significant?

Explanation: Manufacture uses energy and produces CO₂ and dust.

Final answer: Cleaner production and appropriate alternatives matter.

Question Practice 12. What is the International Solar Alliance?

Explanation: India and France launched the initiative in 2015 to promote solar energy cooperation.

Final answer: International Solar Alliance (ISA).

Question Practice 13. Which resources are shown on the chapter's mineral map?

Explanation: Figure 1.11 labels coal, oil, iron ore and bauxite.

Final answer: Coal, oil, iron ore and bauxite.

Question Practice 14. How can a household conserve water?

Explanation: Repair leaks, reduce unnecessary use and adopt safe reuse or harvesting.

Final answer: Use water efficiently and prevent waste.

Question Practice 15. Why does fairness matter in resource policy?

Explanation: People experiencing pollution or displacement may not receive equal economic benefits.

Final answer: Protect rights and distribute costs and benefits fairly.

Question Practice 16. What is restoration?

Explanation: It helps a degraded system return toward a healthier state.

Final answer: Repair of damaged ecological conditions.

MCQs, HOTS and revision

MCQ: Which is non-renewable: coal or sunlight? Coal. MCQ: What does the resource curse mean? Natural wealth alone does not ensure prosperity. HOTS: A mine creates jobs but pollutes water. Propose impact assessment, treatment, consultation, fair compensation and independent monitoring. Exam trap: Renewable does not mean inexhaustible.

Figure guidance and historical-data caution

Figure 1.1: Dudhsagar waterfall; 1.2: microhydel plant; 1.11: mineral distribution; 1.12: Brahmaputra shared waters; 1.13: Mettur dam; 1.17: Punjab groundwater-depth map dated June 2022; 1.18–1.20: construction and farming; 1.21–1.22: solar power. Textbook historical figures and case-study outcomes are not live 2026 measurements. Official NCERT PDF.