A layer of ozone in the upper atmosphere shields Earth from most
A) acid rain.
B) bacterial diseases.
C) greenhouse effects.
D) solar ultraviolet radiation.
E) water pollution.
Correct Answer:
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Q37: Which one of the following marine ecosystems
Q47: The most serious and rapidly accelerating of
Q48: A friend asks you about what has
Q50: Chlorinated hydrocarbons cause
A)"Biological magnification."
B)air pollution.
C)ozone hole.
D)greenhouse effect.
E)acid
Q51: A significant drop in the upper atmospheric
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Q54: Biomagnification is a significant problem in aquatic
Q55: Which term from the five listed is
Q56: The major cause of thinning of the
Q57: If you plot mean annual precipitation against
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