The frequency of a wave is ________.

A. the time between successive waves
B. the amount of displacement of the medium through which the wave is passing
C. the number of waves passing a given point per unit time
D. the energy of the wave


Answer: C

Environmental & Atmospheric Sciences

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Ecological diversity is a measure of the number of

A. Different versions of the same gene in an ecological community B. Different kinds of organisms within a community or ecosystem C. Niches, trophic levels, and ecological processes of a biological community D. Sizes, colors, and shapes of organisms within an ecological community E. Different species in an ecosystem

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Where on the map is the center of high pressure influencing ocean currents with a counterclockwise circulation?



A) A
B) B
C) C
D) D

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A secondary rainbow

A) is always brighter than a primary rainbow. B) produces a color pattern that is the same as a primary rainbow. C) is more likely when the Sun is straight over head, or nearly so. D) requires that light be reflected twice within a raindrop. E) all of the above

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What was the primary cause of the decline in oil prices in 2016 to only 1/4 of the prices in 2008?

A) the soil supply glut caused by fracking B) a typographical error in a Black Friday sale ad C) the war against ISIS D) a prolonged peace in the Middle East E) energy conservation and the use of renewable technologies

Environmental & Atmospheric Sciences