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Question

How do plants help maintain the carbon cycle by absorbing carbon dioxide from the atmosphere?

The correct answer is

Plants convert carbon into sugar molecules.

In the carbon cycle, carbon moves between the atmosphere, living things, oceans and rocks. Green plants take in carbon dioxide from the atmosphere through the stomata of their leaves.

During photosynthesis, plants use sunlight and chlorophyll to combine this carbon dioxide with water, forming glucose (a sugar) and releasing oxygen: 6CO2 + 6H2O → C6H12O6 + 6O2. So the carbon becomes part of sugar molecules and enters food chains.

Plants do not release the absorbed carbon dioxide unchanged and do not store it as a gas in their cells. Urea is a nitrogen-containing waste made in the liver of animals, not a product formed by plants from carbon dioxide.

Hence, Plants convert carbon into sugar molecules.

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