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Why is water essential for life?...

Why is water essential for life?

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MBD -HARYANA BOARD-OUR NATURAL RESOURCES-Example
  1. What are the two forms of oxygen found in the atmosphere?

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  2. Why is the atmosphere essential for life?

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  3. Why is water essential for life?

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  4. How are living organisms dependent on the soil ? Are organisms that li...

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  5. You have seen weather reports on television and in newspapers. How do ...

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  6. We know that many human activities lead to increasing levels of pollut...

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  7. Write a note on formation of soil.

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  8. What are the effects of use of fertilizers and pesticides for long per...

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  9. What are the effects of use of fertilizers and pesticides for long per...

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  10. Why is soil as resource important for mankind ? Mention the constituen...

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  11. Define soil fertility. How can it be maintained ?

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  12. What is air pollution ? Write the main sources and preventive measures...

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  13. Write a few properties of water. Sketch water Cycle.

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  14. What is nitrogen cycle ? Make a simple line sketch to show nitrogen cy...

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  15. Briefly explain oxygen cycle.

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  16. Briefly explain carbon cycle in nature.

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  17. What are the causes of ozone depletion ?

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  18. Write a note on fresh water resources.

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  19. What is atmosphere ? Name its different layers.

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  20. What is the role of atmosphere in climate control ?

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