Question

what are humans doing to release significant amounts of excess carbon into the atmosphere, leading to climate change?
not keeping enough house plants
breathing out too much carbon dioxide
burning sequestered carbon fossil fuels
keeping too many pets

Explanation:

• House plants have a minimal impact on overall carbon levels.
• Human breathing is a natural process and not the main cause of excess carbon.
• Burning fossil fuels (like coal, oil, gas) releases large amounts of carbon that was stored (sequestered) underground for millions of years, significantly contributing to climate - change - causing carbon in the atmosphere.
• Keeping pets has a negligible impact on excess carbon release compared to fossil - fuel burning.

Answer:

C. burning sequestered carbon fossil fuels