Question

multiple-choice question humans burning fossil fuels causes the co₂ in the atmosphere to no change increase decrease rewatch

Explanation:

Fossil fuels (like coal, oil, gas) contain carbon. When burned, they react with oxygen to produce carbon dioxide ($\ce{CO_{2}}$). This process releases $\ce{CO_{2}}$ into the atmosphere, so the amount of atmospheric $\ce{CO_{2}}$ increases. The "no change" and "decrease" options are incorrect because burning fossil fuels adds $\ce{CO_{2}}$, not leaving it unchanged or reducing it.

Answer:

B. increase (assuming the options are labeled as A. no change, B. increase, C. decrease for clarity; the correct choice is the one with "increase")