Environmental Science
Solar radiation reaches the earth's surface as:

Ultraviolet, visible, and infrared radiation
Ultraviolet radiation only
Visible and infrared radiation only
Visible radiation only
Infrared radiation only

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Environmental Science
The wind direction is:

Always directly from high toward low pressure
The direction to which the wind is blowing
The direction from which the wind is blowing
Always directly from low toward high pressure

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Environmental Science
The aurora is produced by:

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

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