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All questions of Natural Resources and Their Use for Class 8 Exam

What role does the International Solar Alliance (ISA) aim to fulfill?
  • a)
    Promote fossil fuel use
  • b)
    Facilitate cooperation on solar energy among sunny nations
  • c)
    Limit access to solar technology
  • d)
    Encourage competition among countries
Correct answer is option 'B'. Can you explain this answer?

Focus Academy answered
The International Solar Alliance aims to facilitate cooperation among countries with abundant sunshine to promote the use of solar energy. By encouraging collaboration on solar projects, ISA seeks to reduce dependence on fossil fuels and enhance access to clean, renewable energy for sustainable development.

What is one of the main benefits of adopting traditional agricultural practices like those in Vriksayurveda?
  • a)
    Greater mechanization of farming
  • b)
    Increased use of chemical fertilizers
  • c)
    Enhanced soil health and fertility
  • d)
    Reduced biodiversity
Correct answer is option 'C'. Can you explain this answer?

Benefits of Traditional Agricultural Practices
Traditional agricultural practices, such as those outlined in Vriksayurveda, offer numerous advantages, particularly in enhancing soil health and fertility. Here's how these practices contribute positively to agriculture:
1. Soil Health Improvement
- Traditional methods emphasize the use of organic materials like compost and natural fertilizers.
- These practices help in replenishing nutrients in the soil, making it more fertile over time.
2. Microbial Activity
- By avoiding chemical fertilizers, traditional practices encourage the proliferation of beneficial soil microorganisms.
- A rich microbial community enhances nutrient availability and promotes healthy plant growth.
3. Soil Structure and Water Retention
- Organic matter from traditional practices improves soil structure, leading to better aeration and drainage.
- Enhanced soil structure also improves water retention, reducing the need for frequent irrigation.
4. Pest and Disease Resistance
- Fertile soil nurtures robust plants that are less susceptible to pests and diseases.
- Traditional practices often include crop rotation and intercropping, which further protect against infestations.
5. Sustainability and Biodiversity
- By fostering a diverse ecosystem, traditional agriculture supports a variety of crops and wildlife.
- This biodiversity is crucial for ecosystem resilience, helping to combat climate change impacts.
In conclusion, adopting traditional agricultural practices, like those of Vriksayurveda, significantly enhances soil health and fertility, ensuring sustainable farming and better crop yields over time.

Which statement best describes the concept of "the Natural Resource Curse"?
  • a)
    Countries with abundant resources always become wealthy.
  • b)
    Resource-rich countries do not face any economic challenges.
  • c)
    Nations without resources are more prosperous.
  • d)
    Rich resource countries often grow slowly due to reliance on raw material exports.
Correct answer is option 'D'. Can you explain this answer?

The Natural Resource Curse, or Paradox of Plenty, refers to the phenomenon where countries rich in natural resources, like oil or minerals, often experience slower economic growth because they rely heavily on exporting raw materials instead of developing industries that add value. This can lead to economic instability and hinder long-term development.

Which is NOT a characteristic of renewable resources?
  • a)
    They can regenerate naturally.
  • b)
    They are available forever.
  • c)
    They take a long time to form.
  • d)
    They can run out if used too much.
Correct answer is option 'C'. Can you explain this answer?

Renewable resources can naturally regenerate and are available indefinitely if used responsibly. They do NOT require long geological timescales to form—that is a characteristic of non-renewable resources. Also, renewable resources can be depleted if overused faster than they regenerate.

What is the main concern associated with the overexploitation of groundwater?
  • a)
    Rising water tables
  • b)
    Increased soil fertility
  • c)
    Decreased water tables
  • d)
    Enhanced biodiversity
Correct answer is option 'C'. Can you explain this answer?

Overexploitation of groundwater leads to decreased water tables, meaning the underground water level drops due to excessive extraction beyond natural replenishment rates. This can cause long-term sustainability issues for agriculture and water availability, highlighting the need for responsible water management practices.

Which of the following is an example of a renewable resource?
  • a)
    Natural gas
  • b)
    Solar energy
  • c)
    Oil
  • d)
    Coal
Correct answer is option 'B'. Can you explain this answer?

Solar energy is a renewable resource because it can be replenished naturally and does not deplete over time when harnessed. Unlike fossil fuels such as coal and oil, which take millions of years to form and are consumed faster than they can be replaced, solar energy is abundant and continually available as long as the sun shines.

Which of the following is a significant consequence of industrialization powered by fossil fuels?
  • a)
    Restoration of natural cycles
  • b)
    Disturbance of natural cycles
  • c)
    Enhanced ecosystem services
  • d)
    Increased biodiversity
Correct answer is option 'B'. Can you explain this answer?

Focus Academy answered
Industrialization powered by fossil fuels often leads to the disturbance of natural cycles, including climate change and habitat destruction. These disturbances can have far-reaching effects on ecosystems and biodiversity, resulting in environmental degradation and loss of natural resources.

What are natural resources primarily defined as?
  • a)
    Substances from nature valuable to humans
  • b)
    Man-made materials
  • c)
    Only renewable resources
  • d)
    Resources that can be easily replaced
Correct answer is option 'A'. Can you explain this answer?

Natural resources are defined as materials or substances that originate from nature and hold value for human use. They include both living (plants, animals) and non-living (water, minerals) components of our environment. Understanding natural resources is essential for sustainable living and environmental stewardship.

What is a key strategy to avoid the depletion of non-renewable resources?
  • a)
    Shift to renewable energy sources
  • b)
    Focus on resource exports
  • c)
    Increase production rates
  • d)
    Maximize resource extraction
Correct answer is option 'A'. Can you explain this answer?

Shifting to renewable energy sources is a crucial strategy to avoid the depletion of non-renewable resources. By transitioning to sustainable alternatives, countries can reduce their reliance on finite resources like coal and oil, ensuring a more sustainable future while minimizing environmental impact.

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