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How have human activities caused deserti...

How have human activities caused desertification? Explain.
Or
How does algal bloom destroy the quality of a fresh water body? Explain.

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ALLEN-BIODIVERSITY-Question
  1. The above graph show Species-Area relationship. Write the equation of ...

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  2. Differentiate between in situ and ex situ approaches of conservation o...

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  3. What is mutualism? Mention any two examples where the organisms involv...

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  4. List any four techniques where the principle of ex-situ conservation o...

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  5. (a) What is Evil Quartet ? (b) Write down Few impact of Biodiversit...

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  6. Write down the name of few species. (a) Which extinct due to over e...

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  7. (i) What is Earth Summing ? (ii) What was the purpose of Earth summi...

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  8. What is the meaning of stability in context to a biological community?

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  9. What was the conclusion of David Tilman's Field experiment ?

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  10. Explain Rivet popper hypothesis give by paul Ehrlich.

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  11. The following graph shows the species area relationship. Answers the Q...

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  12. Justify with the help of an example where a deliberate attempt by huma...

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  13. Since the origin of life on Earth, there were five episodes of mass ex...

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  14. Many plant and animal species are on the verge of their extinction bec...

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  15. What is 'predation' ? Explain with the help of suitable examples why i...

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  16. How have human activities caused desertification? Explain. Or How ...

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  17. fill in the Blanks : (i) Reserphine is produced by (ii) According...

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  18. (i) The term lungs of the planet is used for (ii) What is the main r...

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  19. Explain the observation of Alexander von Humboldt.

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  20. Describe the advantages for keeping the ecosystem healthy.

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