Final answer:
Human activities like burning fossil fuels and deforestation have a significant impact on the carbon cycle by releasing stored carbon into the atmosphere. Changes in land use also affect carbon storage.
Step-by-step explanation:
Human activities can affect the carbon cycle in multiple ways. One major impact is the burning of fossil fuels, which releases large amounts of carbon dioxide into the atmosphere. Deforestation is another significant factor as trees absorb carbon dioxide through photosynthesis. When trees are cut down, this process is disrupted, and the stored carbon is released back into the atmosphere. Additionally, changes in land use, such as urbanization and agriculture, can alter the natural carbon storage capacity of ecosystems.
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