Coal takes millions of years to form from buried organic matter. Once extracted and burned, it cannot be replaced quickly. Its slow formation and rapid use make it a non-renewable energy source. Class 8 Social Science Textbook Chapter 1 Natural Resources ...
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India’s growing electricity demand strains fossil fuels, increases pollution and causes environmental degradation. Meeting demand sustainably requires shifting to renewable energy, improving efficiency and balancing development with ecological responsibility. Class 8 Social Science Textbook Chapter 1 Natural Resources and Their Use ...
Untreated waste pollutes air, water and soil, harming plants, animals and humans. It disrupts ecosystems, spreads diseases and prevents natural cycles from functioning properly, leading to long-term environmental degradation. Class 8 Social Science Textbook Chapter 1 Natural Resources and Their Use ...
Industrial waste pollutes rivers with harmful chemicals, reducing oxygen levels, killing aquatic life and contaminating drinking water. It destroys habitats and disrupts the ecological balance of river ecosystems. Class 8 Social Science Exploring Society: India and Beyond Part 1 Solution Class 8 ...
Overfishing has drastically reduced tuna numbers, threatening their survival. When caught faster than they can reproduce, tuna populations decline, affecting marine ecosystems and people dependent on them for food or income. Class 8 NCERT Social Science India and the World: Land ...