High-pitched sound has a high

A. speed.
B. rate of vibration.
C. both of these
D. neither of these


Answer: B

Environmental & Atmospheric Sciences

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What open water zone is near shore and over the continental shelf?

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A) good data. B) expensive computers. C) excellent television graphics. D) an uninformed population.

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Increased ozone in the lower atmosphere (near the ground) results primarily from

A. CFC pollution. B. carbon dioxide pollution. C. automobile exhaust. D. All of the above.

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The theory of evolution was developed in large part by evidence gathered from species within

the Hawaiian Islands. Indicate whether the statement is true or false.

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