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MBD -HARYANA BOARD-OUR NATURAL RESOURCES-Example
- What is soil erosion?
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- What are the methods of preventing or reducing soil erosion?
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- What are the different states in which water is found during the water...
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- Name two biological important compounds that contain both oxygen and n...
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- List any three human activities which would lead to an increase in CO2...
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- What is greenhouse effect ?
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- What are the two forms of oxygen found in the atmosphere?
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- Why is the atmosphere essential for life?
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- Why is water essential for life?
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- How are living organisms dependent on the soil ? Are organisms that li...
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- You have seen weather reports on television and in newspapers. How do ...
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- We know that many human activities lead to increasing levels of pollut...
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- Write a note on formation of soil.
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- What are the effects of use of fertilizers and pesticides for long per...
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- What are the effects of use of fertilizers and pesticides for long per...
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- Why is soil as resource important for mankind ? Mention the constituen...
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- Define soil fertility. How can it be maintained ?
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- What is air pollution ? Write the main sources and preventive measures...
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- Write a few properties of water. Sketch water Cycle.
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- What is nitrogen cycle ? Make a simple line sketch to show nitrogen cy...
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