Environmental Science
The wind-chill factor:

Tells farmers when to protect crops from a freeze
Relates body heat loss with wind to an equivalent temperature with no wind
Indicates the temperature at which water freezes on exposed skin
Takes into account humidity and air temperature in expressing the current air temperature
Determines how low the air temperature will be on any given day

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Environmental Science
During an equinox:

At noon the sun is overhead at the equator
The days and nights are of equal length except at the poles
The earth is not tilted toward nor away from the sun
All of these

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