Coal is mostly carbon. When coal is burned, it reacts with oxygen. The carbon dioxide produced is released into the atmosphere. The chemical reaction for coal burning is shown.

Question

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​C + O2 ​→ CO2
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​Based on the model shown, which statement correctly describes what may happen to the carbon dioxide in the atmosphere?
A
Carbon dioxide becomes solid and falls to the ground.
B
Carbon dioxide burns in the atmosphere.
C
Carbon dioxide is breathed in by animals and humans.
D
Carbon dioxide is used by plants in photosynthesis.

Answer 1

The correct statement that describes what may happen to the carbon dioxide in the atmosphere is:

D. Carbon dioxide is used by plants in photosynthesis.

Plants take in carbon dioxide from the atmosphere and use it, along with sunlight and water, to produce glucose and oxygen through the process of photosynthesis.