According to the U.S. Environmental Protection Agency (EPA), children are ____ times more susceptible to the effects of toxic chemicals compared to adults.
A. 2
B. 4
C. 6
D. 10
E. 50
Answer: D
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Pegmatites are associated with ____ rocks and contain ____, ____, and ____
A)greenstone belt volcanic; copper; lead; zinc B)greenstone belt volcanic; rubidium; beryllium; lithium C)granitic; lithium; zinc; gold D)granitic; lithium; beryllium; rubidium E)sedimentary; gold; chrome; platinum
Distinguish between a tornado watch and a tornado warning
What will be an ideal response?
A decrease in the levels of ozone in the ozone layer:
a. may be related to human use of chlorofluorocarbons. b. is not a cause for concern to humans because the ozone layer is in the stratosphere. c. cannot possibly be related to any human activities. d. is completely unrelated to the incidence of skin cancers in humans.
A sidereal day is defined as ________
A) the time between periods when the sun is at the exact same height in the sky, for example, noon B) 24 hours in a day C) the time for one complete revolution of the earth relative to the celestial reference D) 24 hours at Greenwich, England