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Why are non-biodegradable substances not...

Why are non-biodegradable substances not broken down by microbes?

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Enzymes of microbes are highly specific which only break down natural materials but not the materials like plastics.
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ZEN PUBLICATION-OUR ENVIRONMENT -ZEN ADDITIONAL QUESTIONS SECTION ( VERY SHORT ANSWER [VSA] TYPE QUESTIONS )
  1. Choose any three biodegradable wastes from the following Cowdung. DDT ...

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  2. What happens during the first step of ozone formation in the atmospher...

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  3. Why are non-biodegradable substances not broken down by microbes?

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  4. Decomposers are referred to as "nature's cleansers". Why?

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  5. Why are green plants called producers ?

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  6. Define ecosystem.

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  7. Which chemical is used In fire extinguishers? How is it harmful?

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  8. Why is a food chain having two steps, the most advantageous in terms o...

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  9. ldentify which one of the following would have a hazardous impact if i...

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  10. List two ways by which biodegradable substances would affect the envir...

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  11. Select from the following the substances which pose a threat to the en...

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  12. State any two practices which can help In the protection of our eviron...

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  13. What percentage of energy of sunlight is captured by green plants when...

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  14. Flow of energy is unidirectional Name the first two components of the ...

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  15. Name the radiations from the sun that are absorbed by the ozone layer....

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  16. What percentage of energy available at the producer level is transferr...

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  17. Why should blodegradable and non-blodegradable wastes be discarded In ...

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  18. Why has the Indian Government banned the use of polythene bags?

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  19. State two advantages of paper bags over plastic bags during shopping

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  20. Name one natural and one man-made ecosystem.

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