Virtual water refers to water
A) consumed in the production of other products, for example beef, cars or newspaper.
B) shipped around the world to arid areas.
C) mined from ground water aquifers that are no longer being recharged.
D) extracted from bio- and sewage waste.
Answer: A
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A. One can work with two or more tables and Relational database queries rely on keys that connect tables. B. One may query tables that are connected by either join or relate. C. Relational database queries rely on keys that connect tables. D. All of these are correct E. One can work with two or more tables.
A cannonball shot from a cannon with a long barrel will have a greater muzzle velocity because the cannonball receives a greater
A) force. B) impulse. C) both A and B D) neither A nor B
Which alternative energy source does NOT utilize direct solar energy?
a. power towers b. parabolic troughs c. dish/engine concentrator d. vapor hydrothermal e. photovoltaic
Which of these glacial landforms are commonly associated with lakes?
a. kettles b. roche moutonnées c. horns d. drumlins e. eskers