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What is a perfect pesticide?...

What is a perfect pesticide?

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The perfect pesticide is one which destroys a particular pest and is completely harmless to every other form of life.
No such pesticide exists or likely to.
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VGS PUBLICATION-BRILLIANT-OUR ENVIRONMENT-OUR CONCERN-PREPARATION QUESTIONS FOR THE EXAMINATION PURPOSE
  1. What is Biomagnification?

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  2. What are pesticides?

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  3. What is a perfect pesticide?

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  4. Who introduced 'Ecological pyramids'?

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  5. How can we draw a food chain?

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  6. How many types of ecological pyramids are there in practice? Name them...

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  7. Which process helps to convert the solar energy into suitable form of ...

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  8. What limits the number of trophic levels in a fooc chiain?

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  9. State one reason to justify the position of man at the apex of most fo...

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  10. Which food chains are advantageous in terms of energy?

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  11. Construct a food chain composing the following : Snake, Hawk, Rats, Pl...

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  12. Which of the following will have the maximum concentration of harmful ...

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  13. Prepare two slogans to consere water.

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  14. Were the sparrows really responsible? What was the reason for the fall...

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  15. Explain the flow chart given below.

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  16. Observe the pyramid of number which is given below and answer the ques...

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  17. Explain in brief about the alternate methods to be followed to prevent...

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  18. GrasstoGrasshoppertoFromtoSnaketoHawk. What will happen if we remove...

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  19. Observe the diagram and answerr the following. (i) Wriite any two fo...

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  20. Write any 4 slogans on the necessity of forests and on their conservat...

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