Environmental Science
During an equinox:

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

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Environmental Science
Which statement(s) below is/are correct?

Fog can be composed of ice crystals
Valleys are more susceptible to radiation fog than hill tops
Without the summer fog along the coast of California, redwoods would not grow well there
All of these

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Environmental Science
At night, low clouds:

Have no effect on the atmospheric greenhouse effect
Enhance the atmospheric greenhouse effect
Are often caused by the atmospheric greenhouse effect
Weaken the atmospheric greenhouse effect

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