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How are most of the solid wastes in urba...

How are most of the solid wastes in urban areas disposed of?

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LAKHMIR SINGH & MANJIT KAUR-OUR ENVIRONMENT-Exercise
  1. Give a method for the disposal of household wastes such as left-over f...

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  2. What is meant by incineration? For what purpose is it used ?

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  3. How are most of the solid wastes in urban areas disposed of?

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  4. State two advantages of using disposable paper cups over disposable pl...

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  5. What is sewage ? How is sewage disposed of ?

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  6. EFFECTS OF OZONE DEPLETION

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  7. What would happen if the ozone layer in the atmosphere completely disa...

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  8. (a) With the help of a flow diagram, describe how energy from th sun f...

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  9. (a) What is ozone ? How is it formed ? (b) How does ozone layer prot...

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  10. (a) How is energy introduced into the ecosystem ? (b) Consider the ...

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  11. (a) Explain why, a food chain usually cannot have more than three of f...

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  12. What provides the energy which then flows through a food chain ?

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  13. Which pollutant released into the air during refrigeration and aircond...

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  14. In the given food chain, suppose the amount of energy at fourth trophi...

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  15. Which of the following limits the number of trophic levels in a food c...

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  16. What percentage of sun's energy falling on the leaves of green plants ...

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  17. The depletion of ozone layer in the upper atmosphere is mainly due to ...

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  18. In an ecosystem, the 10% of energy available for transfer from one tro...

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  19. Flow of energy in an ecosystem is always

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  20. Excessive exposure of human to UV-rays results in (i) damage to imm...

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