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.
A change in the air temperature can change the relative humidity.
The relative humidity is a measure of the air's actual water vapor content.
The length of human hair changes as the relative humidity changes.

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Environmental Science
In the food relationship where the lion eats the wild beast, and the wild beast eats plants

The lion is the predator and the wilde beast is the prey
The lion is the primary consumer and the wilde beast is the secondary consumer
The lion is the secondary consumer and the wilde beast is the primary consumer
The lion is the prey and the wilde beast is the predator

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Environmental Science
Although the polar regions radiate away more heat energy than they receive by insolation in the course of a year, they are prevented from becoming progressively colder each year by the:

Conduction of heat through the interior of the earth
Concentration of earth's magnetic field lines at the poles
Circulation of heat by the atmosphere and oceans
The insulating properties of snow
Release of latent heat to the atmosphere when polar ice melts

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