Question

Which greenhouse gas has an average lifetime in the atmosphere of a few weeks to thousands of years and is the largest contributor to climate change?

carbon dioxide
methane
nitrous oxide
fluorinated gas

Answer 1

The greenhouse gas that has an average lifetime in the atmosphere of a few weeks to thousands of years and is the largest contributor to climate change is **carbon dioxide**. While methane and nitrous oxide also contribute to climate change, carbon dioxide is the most significant in terms of its volume and long-term impact on the climate.