Environmental Science
The north-facing side of a hill in a mountainous region in the US tends to:

Grow a variety of trees that are typically observed at higher elevation
Have snow on the ground for a longer period of time in winter compared to the south-facing side
Receive less sunlight during a year than the south-facing side
Be a better location for a ski run than the south-facing side
All of these

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Environmental Science
During an equinox:

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

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