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Argument: Non-human water vapor is a primary driver of the "greenhouse gas effect"
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- "Water Vapor Rules the Greenhouse System". Global Warming, a closer look at the numbers. Retrieved 12.7.07 - "Just how much of the 'Greenhouse Effect' is caused by human activity? It is about 0.28%, if water vapor is taken into account-- about 5.53%, if not. This point is so crucial to the debate over global warming that how water vapor is or isn't factored into an analysis of Earth's greenhouse gases makes the difference between describing a significant human contribution to the greenhouse effect, or a negligible one."...