Answer: The amount of carbon dioxide in the atmosphere,
Chapter 0, Problem Chapter 3.81(choose chapter or problem)
The amount of carbon dioxide in the atmosphere, measured in parts per million, has been increasing as a result of the burning of oil and coal. The buildup of gases and particles traps heat and raises the planet s temperature, a phenomenon called the greenhouse effect. Carbon dioxide accounts for about half of the warming. The function projects carbon dioxide concentration, in parts per million, years after 2000. Using the projections given by the function, when will the carbon dioxide concentration be double the preindustrial level of 280 parts per million?
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