The residence time refers to the average length of time that a drop of water remains
A) intact before the hydrogen and oxygen atoms split.
B) in its store.
C) in motion without being stuck in a store.
D) unpolluted by human activities.
B) in its store.
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What resource base of Mongolia has been recently exploited?
A) minerals B) labor C) timber D) horses E) hydropower
Insiders and outsiders tend to construct a given place differently
Indicate whether this statement is true or false.
What does the Gender Equity measure?
A) ratio of male to female college graduates B) ratio of male to female students enrolled in primary and secondary schools C) ratio of male to female wages D) ratio of male to female survival rates E) ratio of male to female wages AND ratio of male to female survival rates
An important reason for the large daily temperature range over deserts is
a. ?there is little water vapor in the air to absorb and re-radiate infrared radiation. b. ?the light-colored sand radiates heat very rapidly at night. c. ?dry air is a very poor heat conductor. d. ?free convection cells are unable to form above the hot desert ground. e. ?the ozone content of desert air is very low.