On June 21, an observer would see:

a. long days and short nights in the Southern Hemisphere.
b. long days and short nights in the Northern Hemisphere.
c. day and night of equal length.
d. none of these


B

Environmental & Atmospheric Sciences

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During the twentieth century, the Earth's atmospheric temperature increased by about ________ degree(s) Celsius

A) .3 B) 1 C) 2 D) 3

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Observe these two maps of specific humidity, the top from July 2012, the bottom from May 2012. Which condition could account for the observed changes?

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Which of the following is an anthropogenic source of acid deposition?

A) Sea spray B) Volcanic eruptions C) Extensive natural forest fires D) Gasoline engine emissions from automobiles

Environmental & Atmospheric Sciences