Environmental Science
According to Wein's displacement law, the wavelength at which maximum radiation occurs

Is proportional to the temperature
Is inversely proportional to the pressure
Is inversely proportional to the temperature
Is proportional to the pressure

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Environmental Science
Frost forms when:

Objects on the ground cool below the dew point temperature.
All of these
Water vapor changes into ice without first becoming a liquid.
The dew point is 32oF or below.

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