Question

What is the most significant greenhouse gas responsible for global warming?

• A. Methane
• B. Carbon dioxide
• C. Ozone
• D. Chlorofluorocarbons

Answer 1

Answer:

B. Carbon dioxide

The gases that cause the greenhouse effect are known as greenhouse gases. The main greenhouse gases are carbon dioxide, methane, chlorofluorocarbon, nitrous oxide, and ozone. The most significant greenhouse gas is carbon dioxide.