Environmental Science
In a temperature inversion:

Air temperature decreases with increasing height
Air temperature remains constant with increasing height
Air temperature increases with increasing height
It is warmer at night than during the day

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Environmental Science
The aurora is produced by:

Scattering of sunlight in the upper atmosphere
Reflections of sunlight by polar ice fields
Burning oxygen caused by the intense sunlight at high altitude
Fast-moving charged particles colliding with air molecules
The combination of molecular and atomic oxygen to form ozone

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