The open spaces in a crystal of ice contains
A. trace amounts of water.
B. nothing.
C. vapor.
D. none of the above
Answer: B
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Deserts receive less than ______ centimeters of rain per year, on average
Fill in the blank(s) with correct word
Most rainfall in the middle latitudes begins as snow formed through the Bergeron Process
Indicate whether the statement is true or false
Which of the following is true of the individual resonance structures which contribute to a resonance hybrid?
A) Each resonance structure actually exists. B) Each resonance structure is more stable than is the resonance hybrid. C) In going from one resonance structure to another the electrons move from one location to another. D) None of the above is true.
Which of the following is a mechanical barrier to conception?
A. IUD B. Condoms C. Birth control pills D. Vasectomies E. Abortion