The figure shows how two gases, X and Y, move between the air, green plants and animals. During the day, green plants take in gas Y and give out gas X. Animals take in gas X and give out gas Y all the time.

Question

CASE_STUDIESOxygen Cycle in NatureCarbon Cycle in Nature3 sub-questions

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Choose the most appropriate option to describe the role of biogeochemical cycles in an ecosystem.

What are the impacts of deforestation on the Earth's oxygen and carbon cycles? What are the other consequences of deforestation?

Explain with suitable diagram the path that carbon takes to go back to the atmosphere. You may start from plants using CO2 from the atmosphere.

Why is an excess of CO2 in the atmosphere considered undesirable even though it is required by plants?

Oceans act as the Earth's largest carbon sink, which means they:

Which process removes carbon dioxide from the air?