Environmental Science
As the air temperature increases, with no addition of water vapour to the air, the relative humidity will:

Remain the same
Increase until it becomes equal to the dew point temperature
Decrease
Increase

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Environmental Science
How do red and blue light differ?

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

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