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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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.
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
The highest wave ever measured was 34 meters (112 feet)
a. True b. False
Instructions: Choose one answer from each pair of selections. Is ozone a component of LONDON-TYPE or LOS ANGELES-TYPE smog?