Environmental Science
Which of the following can be used as a method of protecting an orchard from damaging low temperatures during a radiation inversion?

Irrigation (cover the area with water)
Orchard heaters
All of these
Wind machines

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Environmental Science
How do red and blue light differ?

Red light has a higher intensity.
Red and blue light have different directions of polarization.
Blue light has a higher speed of propagation.
The wavelength of red light is longer.

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Environmental Science
An important reason for the large daily temperature range over deserts is:

There is little water vapor in the air to absorb and re-radiate infrared radiation
The ozone content of desert air is very low
Dry air is a very poor heat conductor
The light-colored sand radiates heat very rapidly at night
Free convection cells are unable to form above the hot desert ground

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