Question: The industry of disinformation is currently telling the public that increase carbon dioxide in the atmosphere is a good thing and that plain old water vapor is actually the worst greenhouse gas. Which of the following statements properly explains why water vapor cannot be responsible for the current trend of global warming? Question options: The amount of water vapor in the atmosphere changes very little over time and so if the Earth's temperature is rising, it can't be from water vapor because that factor is practically constant. Water vapor only increases in the atmosphere after the atmosphere has already warmed, so the vapor is the cause, it is the effect of warming. Both of the preceding statements are true. None of the answers provided here are the real reason water vapor is not the root cause of global warming.