Class 8 ยท Social Science ยท Exploring Society India and Beyond Part-I
Chapter 1 Notes: Natural Resources and Their Use
What are Natural Resources?
Natural resources are materials and substances found in Nature that are valuable to humans. When humans use elements of Nature for their needs โ like cutting trees for wood or extracting oil โ those elements become 'resources'. For something to be called a resource, it must be technologically accessible, economically feasible to extract, and culturally acceptable.
Categories of Natural Resources
Natural resources can be categorised in two main ways:
1. Based on Use:
- Resources essential for life โ air, water, soil (we cannot survive without these)
- Resources for materials โ wood, marble, coal, gold (used to make objects)
- Resources for energy โ coal, petroleum, sunlight, wind, water (power our homes, transport, industries)
2. Based on Renewability:
- Renewable Resources โ can be naturally replenished, e.g., solar energy, wind, river water, timber (if forests are managed well)
- Non-renewable Resources โ formed over millions of years and cannot be replenished at the rate we use them, e.g., coal, petroleum, iron ore, copper, gold
Renewable Resources and Nature's Cycles
Nature works in cycles with no waste. For example, a fallen tree decomposes, enriches the soil, and new trees grow โ this is Nature's principle of restoration and regeneration. Renewable resources remain renewable only if we do not disturb these natural cycles.
Cause & Effect โ When we disturb Nature's cycles:
- Cutting forests faster than they regrow โ forest depletion
- Over-fishing during spawning season โ decline in fish population (e.g., tuna)
- Industrial waste dumped in rivers โ rivers become poisonous, unable to support life
- Fossil fuel use + deforestation โ rising temperatures โ Himalayan glaciers melting faster than they are replenished
Ecosystem Services: When natural processes (ecosystem functions) benefit humans, they are called ecosystem services. Example: A forest filters water, prevents soil erosion, and provides habitat โ these are ecosystem functions. Clean water and protected farmland that humans receive are ecosystem services.
Distribution of Natural Resources and Its Implications
Natural resources are unevenly distributed across the Earth and within countries. This uneven distribution has major effects:
- Positive effects: Industries near resources create jobs, townships grow, quality of life improves
- Negative effects: People can be displaced from their homes; sacred places may be threatened; conflicts arise
- Trade: Countries trade resources they have for those they lack; ancient India's trade in resources like Wootz steel helped build empires
- Conflicts: Sharing of resources like river water causes disputes โ e.g., the Kaveri River dispute between Karnataka, Tamil Nadu, Kerala, and Puducherry
- Natural Resource Curse (Paradox of Plenty): Having abundant resources does NOT guarantee prosperity. If a country cannot develop industries to process resources into higher-value products, it remains poor despite its wealth of resources. India has largely avoided this by investing in industries and skills.
Responsible Use of Natural Resources: Stewardship
Stewardship means using natural resources responsibly so that they are available for future generations. Irresponsible use has led to pollution, biodiversity loss, and climate change.
Key Problems and Solutions:
| Problem | Cause | Solution |
|---|---|---|
| Groundwater depletion (Punjab) | Over-pumping for farming, free electricity leading to waste | Water harvesting, rainwater recharge, reduce wasteful use |
| Soil degradation | Excessive chemical fertilisers and pesticides | Organic farming, mulching, crop rotation, cow dung fertiliser |
| Air & water pollution | Cement industry dust, industrial waste in rivers | Pollution control guidelines, use of alternative materials like mud, stone, recycled plastic |
| Fossil fuel dependence | Heavy use of coal and petroleum | Switch to solar, wind, and water energy (e.g., India's Bhadla Solar Park, International Solar Alliance) |
Sikkim's Success Story: Sikkim became India's first 100% organic state in 2016. Farmers like Pema switched to compost and natural pest repellents. Result: biodiversity improved, tourism increased, and farmers' incomes rose by 20%!
Ancient Wisdom โ Vแนikแนฃhฤyurveda: A 10th-century Indian botanical science that provided sustainable farming methods โ proper ploughing, natural pest management, crop rotation, and mixed cropping to maintain healthy soil.