What does a model of the carbon cycle show?(1 point) Responses The amount of Earth’s carbon is constant. The amount of Earth’s carbon is constant. The amount of Earth’s carbon increases. The amount of Earth’s carbon increases. The amount of Earth’s carbon decreases. The amount of Earth’s carbon decreases. The amount of Earth’s carbon cannot be determined.
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A model of the carbon cycle typically shows that the amount of Earth’s carbon is constant over long periods, though it can be redistributed among different reservoirs (like the atmosphere, oceans, soil, and living organisms) through various processes like photosynthesis, respiration, decomposition, combustion, and ocean absorption. Therefore, the correct response would be:
The amount of Earth’s carbon is constant.
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