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MBD -HARYANA BOARD-OUR NATURAL RESOURCES-Example
- 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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- Briefly explain oxygen cycle.
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- Briefly explain carbon cycle in nature.
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- What are the causes of ozone depletion ?
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- Write a note on fresh water resources.
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- What is atmosphere ? Name its different layers.
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- What is the role of atmosphere in climate control ?
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- What is ozone layer ? Write its importance.
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- What is meant by ozone shield ?Howthe CFC's and ozone depleting substa...
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- Write a note on the air pollution caused due to combustion
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- Discuss harmful effects of air pollution.
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- What is the role of biotic components in living organisms ?
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