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Identify the fresh water ecosytem....

Identify the fresh water ecosytem.

A

Pond

B

Lake

C

River

D

All of them

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SURA PUBLICATION-Our Environment-Exercise
  1. Identify the fresh water ecosytem.

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  2. Name some domestic hazardous wastes.

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  3. Usage of chemical pesticides and fertilisers causespollution.

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  4. An example for artificial aquatic ecosystem is.

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  5. The average person in India produceskg of waste everyday.

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  6. Temperature, light and wind arefactors.

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  7. obtained energy from the chemical breakdown of dead organisms.

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  8. Garbage buried inside landfills remain here for a long time as they de...

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  9. True or False. If False,give the correct statement: Bacteria and fung...

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  10. True or False. If False,give the correct statement: Human and animal ...

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  11. Find whether the following sentences are true or false.If false correc...

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  12. Arrange the following in a correct sequence and form a food chain:- Hu...

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  13. What are the types of pollution?

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  14. What are the pollutions caused by the objects given below: Loud speake...

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  15. What are the pollutions caused by the objects given below? Plastic

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  16. How can we reduce water pollution?

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  17. Match the following

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  18. Analogy: Biodegradable waste : Leaves,Garden wastes::Non-biodegrada...

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  19. Analogy: Biotic factor: Animals::Abiotic factor:

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  20. What are decomposers?

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  21. Briefly explain the differnet measures to reduce noise pollution.

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