When seawater evaporates, its sodium and chlorine are electronically attracted to one another and crystallize into ________.
A. clay
B. quartz
C. calcite
D. hematite
E. halite
Answer: E
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According to the Köppen system of classifying climates, where are marine climates mainly observed in Canada?
A. coast of Hudson Bay B. coastal areas of the Maritimes C. coastal margins of the Great Lakes D. Pacific coast
The Sun is the source of heat energy that determines:
A) air temperature. B) drives winds. C) controls precipitation patterns. D) all of the above.
Which of the following statements regarding variations in Earth's orbit is true?
A. their combined effect on past global temperatures is purely hypothetical. B. even together, they don't produce enough temperature change to cause an ice age. C. they can fully account for the recent rise in global temperature. D. their effect on global temperatures was only recently discovered by NASA scientists. E. all of the answers listed here.
Which of these statistics gives the most accurate measurement of buying power and the cost of living in a country?
A) GDP B) GNI C) PPP D) HDI E) IMF