Which statement about ground water is false?
A) It is pure H2O.
B) It is less quickly affected by pollution sources than surface water.
C) It makes up about 98 percent of Earth's unfrozen fresh water.
D) It is usually a reliable water source.
Answer: A
Environmental & Atmospheric Sciences
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Which of the following biologically important compounds is achiral?
A) 3-aminopropanoic acid B) 2,3-dihydroxypropanoic acid C) 3,5-dihydroxy-3-methylpentanoic acid D) None, they are all chiral.
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What percentage of parent isotope is remaining if 2 half lifes have elapsed?
A. 6.25% B. 12.5% C. 25% D. 50% E. 100%
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Give one instance when an anticyclone is NOT associated with ideal weather
What will be an ideal response?
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The asteroid belt is located between
A. Mars and Jupiter. B. Jupiter and Saturn. C. Saturn and Uranus. D. the Moon and Mars.
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