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URL:  http://boards.fool.com/i-got-all-13-but-i-am-a-bit-of-a-science-nerd-31053527.aspx

Subject:  Re: Science Quiz Date:  1/7/2014  12:25 AM
Author:  bighairymike Number:  18916 of 19369

I got all 13 but I am a bit of a science nerd.

Question 12 of 13
What gas do most scientists believe causes temperatures in the atmosphere to rise?

Carbon dioxide
Hydrogen
Helium
Radon


I answered CO2 knowing that is what they were looking for but the correct answer (water vapor) is not among the choices offered. You could also argue hydrogen is the most responsible since that is what the sun is using for fuel to heat our entire solar system including earths atmosphere.
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