Refer the given biogeochemical cycle and select the correct option regarding it.

Z is carbon dioxide, X is photosynthesis and W is acid rain.

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Z is nitrogen, Y is combustion and W is acid rain.

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Z is carbon dioxide by respiration, X is photosynthesis and W is global warming.

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Z is nitrogen, X is oxygen.

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Solution

The correct option is C Z is carbon dioxide by respiration, X is photosynthesis and W is global warming.
The given biogeochemical cycle is carbon cycle which maintains the percentage of oxygen and carbon dioxide. Z is the carbon dioxide which is released by the respiration. X is photosynthesis which helps in fixation of the released carbon dioxide due to respiration. W is referred as global warming which involves increase in temperature of earth due to excessive increase in carbon dioxide, methane, CFC level as a result of human activities like deforestation.

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Similar questions

Q. The gas given out in photosynthesis is
(a) nitrogen.
(b) carbon dioxide.
(c) oxygen.
(d) hydrogen.

Select True or False in the following statements regarding photosynthesis and respiration.

1. Photosynthesis occurs only in the presence of chlorophyll.
2. Photosynthesis occurs at all time.
3. Respiration uses carbon dioxide and water.
4. In respiration carbon dioxide is released as end product.

One of the following does not contribute to acid rain. That is :
(a) nitrogen monoxide (b) sulphur dioxide
(c) carbon monoxide (d) carbon dioxide

Q. Which of the following options are correct regarding given assertion and reason?

Assertion [A] : An increase in carbon dioxide in the atmosphere leads to global warming.

Reason [R] : Carbon dioxide is a greenhouse gas.

How plants do photosynthesis and respiration at the same time in the day as in respiration,oxygen is inhaled and carbon dioxide is exhaled and in photosynthesis,carbon dioxide is inhaled and oxygen is exhaled.So they are opposite.So how do they carry out both the processess at the same time?

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