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Name the activites of human beings those...

Name the activites of human beings those have caused much harm to environment

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MBD -HARYANA BOARD-OUR ENVIRONMENT-EXAMPLES
  1. How is ecological balance maintained?

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  2. Name the chKHOicals which are considered responsible for hole in ozone...

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  3. Name the activites of human beings those have caused much harm to envi...

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  4. Name the problKHOs created by human beings for whole of the world?

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  5. Distinguish between decomposers and parasites?

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  6. A food chain is given below: GrasrarrDeerrarrlion?What will happen if ...

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  7. Explain with the help of a food chain how does bio-magnification of ha...

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  8. if plants get 20,000 J of energy from sun,how much enrgy will be avail...

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  9. Why do the food habits of first and third tropic levels differ?

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  10. How much joules of energy will be receved by vulture in the chain of t...

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  11. How does ecological pyramid represents the graphical representation of...

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  12. How is ozone made in atmosphere?how is it depleting?

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  13. In railway trains,tea/coffee is served in earthen pots and disposal cu...

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  14. What is ozone hole ? What is its significance.

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  15. Write the harmful effects of ozone deplection.

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  16. Explain global warming.

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  17. How is acid rain formed?

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  18. What is global warming?

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  19. List four common disposal methods?

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  20. Complete the sketch by labelling A,B,C,D to illustrate food web.

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