Environmental Science
Which of the following statements is not correct?

During the winter, low relative humidity can irritate the mucus membranes in the nose and throat.
The length of human hair changes as the relative humidity changes.
The relative humidity is a measure of the air's actual water vapor content.
A change in the air temperature can change the relative humidity.

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Environmental Science
Suppose it is a winter night and at about 11 p.m., the air cools to the dew-point temperature and a thick radiation fog develops. If the air continues to cool during the night, in 5 hours the dew point temperature will probably:

Decrease as the air becomes moister
Decrease as the air becomes drier
Increase as the air becomes moister
Increase as the air becomes drier

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