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Oxygen is returned to the atmosphere mai...

Oxygen is returned to the atmosphere mainly by

A

Respiration

B

Photosynthesis

C

Burning of wood

D

Fungi

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NCERT TELUGU-Bio Geo Chemical Cycles -Exercise
  1. What do you understand by ozone layer? Write the importance of ozone l...

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  2. Why is it said that nitrogen is very important for us?

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  3. What are the different states in which water in found during the water...

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  4. Describe interdependence of biotic and abiotic components by taking Ni...

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  5. What is Green house effect?

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  6. What is acid rain? How is it formed?

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  7. What is the importance of different biogeochemical cycles in the natur...

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  8. What emissions from human activities lead to ozone depletion? And what...

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  9. How is a balance maintained in the environment?

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  10. Green house gases are

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  11. Molecules of proteins contain

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  12. Oxygen is returned to the atmosphere mainly by

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  13. Ozone layer is getting depleted because of

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  14. Which of the following gas protects the earth from ultra violets radia...

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  15. Fill in the blanks: ………….plants has nitrogen - fixing bacteria in the...

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  16. Fill in the blanks: CFC full form is………………

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  17. Fill in the blanks: …………………and……………are green house gases.

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  18. Fill in the blanks: ……………….is the process in which plants use carbon ...

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  19. Fill in the blanks: ………………and…………..are elemental forms of carbon.

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