Question

how have humans influenced the carbon cycle by increasing the amount of carbon in the atmosphere?
a. burning coal
b. cutting down trees
c. burning oil
d. all of the above

Explanation:

• Option A: Burning coal releases carbon dioxide into the atmosphere as coal is a fossil fuel with carbon.
• Option B: Cutting down trees reduces the number of plants that can absorb carbon dioxide through photosynthesis, leading to more carbon in the atmosphere.
• Option C: Burning oil (another fossil fuel) also releases carbon - based gases like carbon dioxide into the atmosphere.
• Since all of A, B, and C contribute to increasing atmospheric carbon, the correct option is D.

Answer:

D. All of the above