Environmental Science
How do red and blue light differ?

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

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Environmental Science
The most important reason why summers in the Southern Hemisphere are not warmer than summers in the Northern Hemisphere is that:

The sun's energy is less intense in the Southern Hemisphere
Over 80% of the Southern Hemisphere is covered with water
The earth is closer to the sun in January
The earth is farther from the sun in July

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