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If carbon dioxide is given off in respiration then why does the amount of carbon dioxide in the atmosphere remain relatively constant?
A. carbon dioxide forms carbonate rocks.
B. carbon dioxide is a buffer.
C. carbon dioxide is converted in photosynthesis to carbonate.
D. carbon dioxide splits up during photosynthesis.

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Last updated date: 13th Jun 2024
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Answer
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Hint: The rise in carbon dioxide concentration and temperature affects the plant carbon metabolism. Respiration is a process in which glucose breakdown takes place to form ATP, which fuels plant metabolism. Initially, glucose is broken down into pyruvate in glycolysis, which is oxidized to form acetyl-CoA by releasing the molecule of carbon dioxide.

Complete answer:
Respiration refers to inhaling the oxygen from the environment and releasing the carbon dioxide in the atmosphere. In photosynthesis, green plants are involved in fixing carbon dioxide in sunlight to form carbohydrates.
So the carbon dioxide initiated in the atmosphere is counterbalanced by the photosynthetic properties to fix it.
Sunlight plays a significant role in splitting water during light reactions, and carbon dioxide is fixed in the dark phase of photosynthesis.
However, plants are never affected by climate but play a significant role in regulating the global and regional temperatures. The number one supply of carbon/carbon dioxide is outgassing from the Earth's indoors at mid ocean ridges, hotspot volcanoes, and subduction-associated volcanic arcs.
Much of the carbon dioxide launched at subduction zones is derived from carbonate rocks' metamorphism subducting with the sea crust. Much of the available outgassing carbon dioxide, especially as mid ocean ridges and hotspot volcanoes, became saved withinside the mantle while the Earth formed.
Some of the outgassed carbon stays as carbon dioxide within the atmosphere. A few are dissolved withinside the oceans, a few carbons are held as biomass in residing or useless and decaying organisms, and a few are certain in carbonate rocks.

So, the correct option is "option C."

Note:
Carbon is eliminated into a long time garage via means of the burial of sedimentary strata, especially coal and black shales that shop natural carbon from undecayed biomass and carbonate rocks like limestone (calcium carbonate).