A greenhouse works because:
A) of the difference in the solar constant.
B) short wave lengths of energy pass through the glass but longer ones can't.
C) the windows of the greenhouse only allow green light wavelengths to pass through.
D) all greenhouses face south and into the maximum angle of solar energy.
Question 2
Greenhouse gases:
A) keep the earth at a comfortable temperature.
B) did not exist in significant concentrations until the coming of the Industrial Age.
C) are good absorbers of shortwave radiation.
D) cause the earth to have much wider swings in daily temperature ranges than if the gases were not present.
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