Class 9 Exam > Class 9 Notes > Biology for Class 9 > Review Questions - Natural Resources
Class 9 Science Question Answers - Natural Resources (Used only for Project Work)
Review Questions
Give answer of following questions
Q1. What are the basic needs of life to exists ?
Q2. How is our atmosphere different from the atmospheres on venus and mars ?
Q3. What is biosphere ?
Q4. What causes winds ?
Q5. How clouds are formed ?
Q6. Name any three human activities that causes air pollution.
Q7. What are the effects of air pollution on human health ?
Q8. Give the definition of Resources.
Q9. Give the definition of air pollution.
Review Questions
Very short answer type questions
Q1. What is weathering ?
Q2. Mention the components of soil.
Q3. What is water pollution ?
Q4. Mention the percentage of fresh water.
Q5. Define the term "Soil erosion".
Q6. Give the definition of "humus".
Q7. Mention the various factor that make soil.
Q8. How water play its role in weathering ?
Q9. How excessive use of fertilizers harmful to fertility of soil ?
Q10. Mention the other factors besides availability of water play significant role in deciding the sustainability of life in a region.
Short answer type questions
Q1. Write importance of water to the living organisms.
Q2. Give importance of sustainable agriculture.
Q3. What is soil erosion ? Mention main causes of soil erosion.
Q4. Write significant role of living organisms in the formation of soil.
Q5. Give definition of water pollution. Mention the effects of water pollution.
Q6. What are the harmful effects of thermal pollution of water ?
Q7. Why use of polluted water irrigation decreases soil fertility ?
Q8. Write down the differences between exhaustible and inexhaustible resources.
Long Answer type questions
Q1. Write a note on water polluiton.
Q2. Write a note on soil, including following points :-
(a) weathering (b) component of soil (c) Importance of sustainable agriculture (d) Soil erosion
Reasoning answer type question
Q1. Why terrestrial life forms require fresh water ?
Q2. How dissolved oxygen in water is very important factor ?
Q3. How humus affect soil quality ?
Q4. How lichens are important in succession on rock ?
Q5. Why we should not be use chemical pesticides ?
The document Class 9 Science Question Answers - Natural Resources (Used only for Project Work) is a part of the Class 9 Course Biology for Class 9.
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FAQs on Class 9 Science Question Answers - Natural Resources (Used only for Project Work)
| 1. What are natural resources? |  |
Ans. Natural resources are the materials or substances that are found in nature and are essential for human survival and development. They can be classified into two types: renewable resources, such as sunlight and water, which can be replenished naturally, and non-renewable resources, such as fossil fuels and minerals, which are limited in quantity.
| 2. How are natural resources classified? | |
Ans. Natural resources are classified into various categories based on their origin and availability. They can be categorized as renewable resources (such as solar energy and wind energy), non-renewable resources (such as oil and coal), biotic resources (such as forests and wildlife), and abiotic resources (such as minerals and water).
| 3. What is the importance of natural resources? | |
Ans. Natural resources play a crucial role in the development and sustenance of human civilization. They provide raw materials for various industries, energy for powering homes and businesses, food for nourishment, and support ecological balance. They are vital for economic growth, environmental stability, and the overall well-being of society.
| 4. How can we conserve natural resources? | |
Ans. Conserving natural resources is essential to ensure their sustainable use for future generations. Some measures to conserve natural resources include reducing, reusing, and recycling materials, adopting renewable sources of energy, practicing responsible consumption, protecting ecosystems through conservation efforts, and implementing efficient resource management strategies.
| 5. What are the challenges in managing natural resources? | |
Ans. Managing natural resources poses several challenges, including overexploitation and depletion of non-renewable resources, loss of biodiversity, pollution and environmental degradation, conflicts over resource allocation, and the impact of climate change. Effective management requires a balance between resource utilization and conservation, along with international cooperation and sustainable practices.
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