Environmental Science
The earth is tilted at an angle of 23.5o with respect to the plane of its orbit around the sun. If the amount of tilt were increased to 40o, we would expect in middle latitudes:

Hotter summers and milder winters than at present
Cooler summers and milder winters than at present
No appreciable change from present conditions
Hotter summers and colder winters than at present
Cooler summers and colder winters than at present

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Environmental Science
Which of the following statements is not correct?

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

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