Environmental Science
The main reason why vegetables take longer to cook in boiling water at high altitudes is because:

Water boils at a higher temperature with higher altitude
Saturation vapor pressure decreases with increasing altitude
There is less oxygen in the air at high altitude
The temperature of the boiling water decreases with increasing altitude

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Environmental Science
Which of the following statements is not correct?

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.
During the winter, low relative humidity can irritate the mucus membranes in the nose and throat.

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