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Define ecosystem....

Define ecosystem.

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Ecosystem is the functional unit of the environment comprising living and non-living components.
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OSWAAL PUBLICATION-OUR ENVIRONMENT-TOPIC - 1 (ECOSYSTEM AND FOOD CHAIN)(VERY SHORT ANSWER TYPE QUESTIONS)
  1. Define ecosystem.

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  2. What is meant by biological magnification ?

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  3. List two man-made ecosystems.

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  4. List two main components of our environment.

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  5. List two natural ecosystems.

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  6. List two biotic components of a biosphere.

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  7. We often use the word environment. What does it mean ?

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  8. Name two decomposers operating in our ecosystem

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  9. Write one negative effect, on the environment, of affluent life style ...

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  10. Name the two abiotic components of ecosystem.

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  11. What are the various steps in a food chain called ?

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  12. Why do producers always occupy the first trophic level on every food c...

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  13. Why are green plants called producers ?

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  14. In a food chain of frog, grass, insect and snake, assign trophic level...

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  15. The first trophic level in a food chain is always a green plant. Why ?

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  16. Mention the role of micro-organisms like bacteria and fungi.

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  17. Mention the role of decomposers in ecosystem.

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  18. Name the organism (s) belonging to fourth trophic level in the food ch...

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  19. In the following food chain, grass provides 4000 J of energy to the gr...

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  20. Consider a food chain of the following : fish, crab, plankton, shark...

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