When a rear-flank downdraft strikes the ground, it may interact with a(n) ____ beneath a mesocyclone to initiate tornadogenesis

a. updraft
b. forward-flank downdraft
c. vortex tube
d. suction vortex
e. jetstream


ANSWER: b

Environmental & Atmospheric Sciences

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Although sea level glaciers probably never before existed near sea level at the equator, which of the following theories explains how glacial material can be observed there today?

A. theory of plate tectonics B. Maunder theory C. Milankovitch theory D. volcanic dust theory

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Ground level ozone is

A. not regulated. B. found only in rural areas. C. a significant source of air pollution and contributes to the formation of smog. D. a significant source of air pollution and contributes to the increase in the ozone hole.

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The reaction of oxygen with an unsaturated fatty acid gives which of the following products?

A) a phenol B) a hydroperoxide C) vitamin E D) none of the above

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Water use in the United States increased exponentially from 1960 to 1995

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences