Arroyos _____
a are common in the northwestern United States
b occur in arid environments
c occur in moist environments
d result from deposition and build-up of clay and silt sediments
The answer was B. occur in arid environments
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Which of the following can be characterized as a strong base?
A) LiOH B) KOH C) both a and b D) neither a nor b
The oldest dated minerals on Earth are ________ years old
A) 4.03 billion B) 542 million C) 4.4 billion D) 4.56 billion
George Hadley correctly described the general circulation of the atmosphere
Indicate whether the statement is true or false
Which of the following levels of PSA in serum is the smallest which might indicate the possible development of prostate cancer?
A) 2 ng/mL B) 4 ng/mL C) 8 ng/mL D) 12 ng/mL