Although water vapor accounts for about 60% of the atmospheric greenhouse effect, it is the increase of ____ in the atmosphere that appears to be the main cause of global warming.
A) carbon monoxide
B) ozone
C) carbon dioxide
D) argon

Question

Quizplus · Accepted Answer

While water vapor does play a significant role in the greenhouse effect, its concentration in the atmosphere is largely determined by temperature, and so it is not usually considered a "driver" of climate change. On the other hand, the concentration of carbon dioxide (CO2) in the atmosphere has increased by over 40% since the start of the Industrial Revolution, primarily due to the burning of fossil fuels. This increase in CO2 has been shown through numerous studies to be the main cause of the observed global warming over the past century.

Although Water Vapor Accounts for About 60% of the Atmospheric