Which of these natural processes is constantly recycling and purifying water?
A. hydrologic cycle
B. tectonic cycle
C. rock cycle
D. hydrophobic cycle
Answer: A
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Composite volcanoes erupt explosively. What kind of magma do you conclude that composite volcanoes must contain?
A. ancient magma B. magma that is mostly liquid C. thick, sticky magma rich in solids and gas D. magma made of cement
Today, more than 50% of the U.S. importation of oil comes from
A) Saudi Arabia. B) Afghanistan and Iraq. C) the Western Hemisphere, especially Canada. D) China.
In the reaction CH2O(g) + O2(g) ? HCOOH(g) + H2O(g) which species is oxidizing agent?
A) CH2O(g) B) O2(g) C) HCOOH(g) D) H2O(g)
When studying climate, which of these would be considered an example of the macro scale level?
a. New York City b. Cook County, Illinois c. the Amazon Basin d. the underside of a leaf e. the north side of a hill