Final answer:
Humans impact the carbon cycle through cellular respiration, combustion of fossil fuels, and increasing atmospheric CO2 levels.
Explanation:
In the carbon cycle, humans contribute to the carbon cycle in various ways:
- They convert sugars into energy through cellular respiration, releasing carbon dioxide back into the atmosphere.
- Human activities such as burning fossil fuels add inorganic carbon to biotic reservoirs and unbalance the cycle by increasing atmospheric CO2 levels.
- By adding carbon to abiotic reservoirs through combustion of fossil fuels, humans disrupt the natural balance of the carbon cycle.
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