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Blends of polyblend and bitumen, when us...

Blends of polyblend and bitumen, when used, help to increase road life by a factor of three. What is the reason?

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MBD-ENVIRONMENT ISSUES-EXERCISE
  1. Blends of polyblend and bitumen, when used, help to increase road life...

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  2. Algal blooms impart a distinct colour to water due to :

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  3. Name an industry which can cause both air and thermal pollution as wel...

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  4. What is hybird vehicle technology? Explain its advantages?

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  5. How can slash and burn agriculture become enviroment friendly?

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  6. How has DDT caused decline in bird population?

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  7. What are e-wastes? Name any two e-wastes . What is best solution for t...

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  8. Make a list of impurities present in domestic sewage.

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  9. Explain algal bloom.

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  10. Expalin : Radioactive waste

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  11. Why ozone hole forms over Antarctica? How will enhanced UV radiations ...

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  12. What is organic farming ? Discuss the benefits

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  13. Discuss the causes and effects of water pollution. What measures need ...

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  14. When huge amount of sewage is dumped into a river , the BOD will:

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  15. "mango necrosis" is due to :

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  16. Minamata disease of Japan which afficted people with paralysis was tra...

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  17. What is standing state? Coin the term for vertical distribution of veg...

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  18. List the attributes that populations but not individuals possess.

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  19. Differentiate between hibernation and aestivation.

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  20. What are differences between primary succession and secondary successi...

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  21. What is the difference between BOD & COD?

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