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  1. Asked: In:

    Explain the difference between renewable and non-renewable resources. Why is it important to manage renewable resources wisely? Give examples and suggest ways to ensure their sustainable use.

    Virat

    Natural resources are classified into two main types: renewable and non-renewable. Renewable resources are those that can be replenished naturally over time. These include sunlight, wind, water, forests and soil. They are not unlimited, but if used responsibly, they can regenerate and continue to suRead more

    Natural resources are classified into two main types: renewable and non-renewable.

    Renewable resources are those that can be replenished naturally over time. These include sunlight, wind, water, forests and soil. They are not unlimited, but if used responsibly, they can regenerate and continue to support life. For example, trees can regrow if we plant more after cutting them and water sources can refill with rain.

    Non-renewable resources, on the other hand, are formed over millions of years and cannot be replaced once they are used. These include coal, petroleum, natural gas and minerals like iron and copper. Once exhausted, they are gone forever.

    Even though renewable resources seem sustainable, they can become non-renewable if overexploited. For example, if we cut down trees faster than they grow back, forests will vanish. Similarly, if we use groundwater faster than it recharges, it may lead to droughts.

    Therefore, it is important to:

    • Use renewable resources wisely.
    • Plant trees regularly.
    • Save water and avoid wastage.
    • Use energy-efficient devices.
    • Educate people about sustainability.

    Sustainable use of resources ensures that future generations also have access to them. It maintains balance in Nature and supports long-term economic and ecological stability.

     

    For more NCERT Solutions for Class 8 Social Science Chapter 1 Natural Resources and Their Use Extra Questions & Answer:

    https://www.tiwariacademy.com/ncert-solutions/class-8/social-science/

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    • 42
  2. Asked: In:

    Describe how human activities have disturbed Nature’s regenerative cycles. Give at least three examples. What steps can be taken to restore balance in the ecosystem?

    Virat

    Nature has the amazing ability to restore and regenerate itself. Forests grow back, rivers clean themselves and the soil replenishes nutrients. However, human actions have disrupted these natural cycles severely. Deforestation: Cutting down trees for urban expansion, roads, or industries prevents foRead more

    Nature has the amazing ability to restore and regenerate itself. Forests grow back, rivers clean themselves and the soil replenishes nutrients. However, human actions have disrupted these natural cycles severely.

    1. Deforestation: Cutting down trees for urban expansion, roads, or industries prevents forests from regenerating. It leads to soil erosion, loss of biodiversity and disturbed rainfall patterns.
    2. Overfishing: In oceans, fish populations like tuna have declined due to overfishing. When fish are caught faster than they can reproduce, the species suffers and food chains collapse.
    3. Industrial Pollution: Factories release toxic waste into rivers and air. Rivers lose their ability to clean themselves. Polluted water harms aquatic life and human health.
    4. Overuse of groundwater: Farmers using borewells extract more water than the earth can refill. In states like Punjab, this has led to water scarcity and falling water tables.

    To restore ecological balance, we can:

    • Plant trees and protect forests.
    • Set fishing limits and protect breeding seasons.
    • Treat industrial waste before releasing it.
    • Use rainwater harvesting and recharge groundwater.
    • Educate communities on sustainable lifestyles.

    Human beings must act as stewards of Nature, not just consumers. Only then can we ensure that natural systems recover and continue to support life.

     

    For more NCERT Solutions for Class 8 Social Science Chapter 1 Natural Resources and Their Use Extra Questions & Answer:

    https://www.tiwariacademy.com/ncert-solutions/class-8/social-science/

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    • 5
  3. Asked: In:

    What are ecosystem services? Explain five functions of Nature that benefit humans. Why is it important to protect these services in the face of environmental destruction?

    Virat

    Ecosystem services are the benefits that humans receive directly or indirectly from Nature. These services are essential for our survival, health and economy. Nature performs these roles without charging us anything, yet they are often taken for granted. Here are five key ecosystem services: Air PurRead more

    Ecosystem services are the benefits that humans receive directly or indirectly from Nature. These services are essential for our survival, health and economy. Nature performs these roles without charging us anything, yet they are often taken for granted.

    Here are five key ecosystem services:

    1. Air Purification: Trees and plants absorb carbon dioxide and release oxygen, making the air breathable. They also trap dust and pollutants.
    2. Water Filtration: Wetlands, forests and soil filter rainwater naturally. This keeps our rivers and groundwater clean and safe for use.
    3. Pollination: Insects like bees and butterflies help in pollinating crops and plants. Without them, fruits and vegetables wouldn’t grow properly.
    4. Soil Fertility: Decomposers like earthworms and fungi break down dead plants and animals, returning nutrients to the soil.
    5. Climate Regulation: Oceans, forests and glaciers help in controlling the Earth’s temperature and rainfall patterns.

    If we destroy forests, pollute rivers, or kill pollinators, these services will stop. This can lead to food shortages, dirty air and water, climate change and health problems.

    Protecting ecosystem services is not just an environmental issue—it’s a human survival issue. We must conserve biodiversity, reduce pollution and live in harmony with Nature to protect these free but vital services.

     

    For more NCERT Solutions for Class 8 Social Science Chapter 1 Natural Resources and Their Use Extra Questions & Answer:

    https://www.tiwariacademy.com/ncert-solutions/class-8/social-science/

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    • 45
  5. Asked: In:

    Discuss the case of Punjab’s agricultural crisis. How did the Green Revolution impact farming practices? What are the long-term consequences and what lessons can be learned for future food security?

    Virat

    The Green Revolution in the 1960s transformed agriculture in Punjab. High-yielding seeds, chemical fertilizers, pesticides and tube well irrigation increased food production, especially of wheat and rice. Punjab became the food bowl of India, helping prevent famines. However, this success came withRead more

    The Green Revolution in the 1960s transformed agriculture in Punjab. High-yielding seeds, chemical fertilizers, pesticides and tube well irrigation increased food production, especially of wheat and rice. Punjab became the food bowl of India, helping prevent famines.

    However, this success came with serious long-term problems:

    • Monoculture: Farmers began growing mainly wheat and rice. This harmed soil health and reduced crop diversity.
    • Groundwater Depletion: Water-intensive rice farming led to the overuse of groundwater. Water tables dropped dangerously.
    • Chemical Pollution: Overuse of fertilizers and pesticides caused soil degradation and health hazards, including cancer in some regions.
    • Declining Yields: Over time, soil fertility fell and pests became resistant to chemicals.

    Today, over 75% of Punjab’s agricultural zones are considered over-exploited. If this continues, the state may not be able to support farming in the future, affecting national food security.

    Lessons for the future:

    • We must diversify crops to reduce dependency on water-intensive grains.
    • Organic and traditional methods should be promoted.
    • Farmers need support for water-saving technologies.
    • Public awareness and government policies must focus on sustainable agriculture.

    Punjab’s case teaches us that while short-term gains are tempting, long-term sustainability is the real success.

     

    For more NCERT Solutions for Class 8 Social Science Chapter 1 Natural Resources and Their Use Extra Questions & Answer:

    https://www.tiwariacademy.com/ncert-solutions/class-8/social-science/

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    • 15
  6. Asked: In:

    Why might some natural elements not be considered resources despite being useful?

    Piyush365

    Even if a natural element is potentially useful, it might not be considered a resource because of technological limitations, economic inaccessibility, or lack of awareness. For example, lithium was not valuable until modern batteries became common. Until humans can use these elements efficiently andRead more

    Even if a natural element is potentially useful, it might not be considered a resource because of technological limitations, economic inaccessibility, or lack of awareness. For example, lithium was not valuable until modern batteries became common. Until humans can use these elements efficiently and sustainably, they remain unused and unrecognized as resources despite their potential.

     

    For more NCERT Solutions for Class 8 Social Science Chapter 1 Natural Resources and Their Use Extra Questions & Answer:

    https://www.tiwariacademy.com/ncert-solutions/class-8/social-science/

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    • 53
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