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Oxygen is returned to the atmosphere mai...

Oxygen is returned to the atmosphere mainly by

A

burning of fossil fuel

B

respiration

C

photosynthesis

D

fungi

Text Solution

Verified by Experts

The correct Answer is:
C
Burning of fossil fuels results in the emmission of `CO_(2)` in the atmosphere. Respiration is involved in water cycle whereas photory theisis is the process by which plants make their food in the presence of `CO_(2)` and sunlight, thus oxygen in the atmosphere.
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NCERT EXEMPLAR-NATURAL RESOURCES -Natural Resources
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  2. An increase in carbondioxide content in the atmosphere would not cause

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  3. Oxygen is returned to the atmosphere mainly by

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  4. Low visibility during cold weather is due to

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  5. Growth of lichens on barren rocks is followed by the growth of

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  6. Marked temperature changes in aquatic environment can affect

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  7. Soil erosion can be prevented by

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  8. What happens when rain falls on soil without vegetational cover?

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  9. Oxygen is harmful for

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  10. Rivers from land, add minerals to sea water. Discuss how ?

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  11. How can we prevent the loss of top soil?

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  12. How is the life of organisms living in water affected when water gets ...

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  13. During summer, if you go near the lake, you feel relief from the heat,...

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  14. In coastal area, wind current moves from the sea towards the land duri...

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  15. Following are a few organisms Which among the above can grow on stone...

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  16. Soil formation is done by both abiotic factors. List the names of thes...

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  17. All the living organisms are basically made up of C,N,S,P,H and O, . H...

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  18. Why does the percentage of gases like oxygen, nitrogen and carbon diox...

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  19. Why does moon have very cold and very hot temperature variations e.g.,...

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  20. Why do people love to fly kites near the seashore ?

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