When are upper air winds fastest?

A) in winter
B) in summer
C) anytime surface temperature gradients are weak
D) These winds maintain about the same speed throughout the year.


A

Environmental & Atmospheric Sciences

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Most glaciers worldwide are currently in a state of retreat

Indicate whether this statement is true or false.

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Most of the air pollution that humans experience is located in the

A) mesosphere.
B) thermosphere.
C) stratosphere.
D) troposphere.

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Diffraction is a property of

A. earthquake waves. B. sound. C. light. D. all of the above

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The presumed causes for transgressions and regressions of shallow seas during the Paleozoic

were a. greenhouse effect and glaciation. b. tectonic activity and continental rifting. c. glaciation and tectonic events. d. bolide impact and glaciation. e. none of the above

Environmental & Atmospheric Sciences