What do scientists think will happen if the Earth's atmospheric carbon dioxide levels are doubled?
A) Earth's average temperature will increase 2°C to 6°C.
B) Earth's average temperature will not increase.
C) Sea level will rise or fall by about 2 feet.
D) There will be a "Little Ice Age" again.
E) The Sun will cool down and that will offset the carbon dioxide problem.

Question

Quizplus · Accepted Answer

According to the Intergovernmental Panel on Climate Change (IPCC), if atmospheric carbon dioxide levels are doubled, it is very likely (95-100% probability) that the Earth's average temperature will increase by 1.5°C to 4.5°C, with a best estimate of 3°C.

What Do Scientists Think Will Happen If the Earth's Atmospheric