Shelterbelts are to ________ as terraces are to ________
A) salinization; stratification
B) stratification; salinization
C) leaching; desertification
D) wind erosion; water erosion
E) water erosion; wind erosion
D
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The highest wave ever measured was 34 meters (112 feet)
a. True b. False
A polar molecule: a. has a positively-charged and a negatively-charged end
b. is neutrally charged all around. c. does not have a negative or positive charge. d. occurs only in frigid environments.
Instructions: Choose one answer from each pair of selections. Is ozone a component of LONDON-TYPE or LOS ANGELES-TYPE smog?
Crude oil is ________
A) formed in a wide range of temperature and pressure circumstances B) fractionated to separate the chemicals used for gasoline, lubricants, plastics and other products C) formed less than 100 yards below the surface; in deeper places with more pressure, coal is formed D) usable in its raw form E) composed of less than ten different hydrocarbon molecules