The term "vapor pressure of a liquid" means which of the following?
A) the pressure exerted by a liquid
B) the partial pressure exerted by a gas in equilibrium with its liquid
C) both a and b
D) neither a nor b
B
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Which of the following is not a commonly proposed strategy to address issues with food supply?
A) expanding agricultural land B) increasing agricultural productivity C) increasing employment in fishing D) improving food sources E) expanding exports
________ and thermoelectric generators are the primary consumptive users of fresh water
Fill in the blank(s) with correct word
Mass transportation systems are often difficult to establish because
A. They are economically feasible only in rural areas. B. People will not use them. C. Many metropolitan areas have very dispersed housing patterns. D. All of these statements are correct.
International labor migration tends to originate in
A) rich countries with weak economies. B) poor countries with weak economies. C) rich countries with strong economies. D) poor countries with strong economies.