Soil erosion from farmland can be reduced by all of the following methods except
A. terracing of fields.
B. complete clearing of fields after harvest.
C. contour plowing.
D. use of windbreaks.
Answer: B
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Why did Sweden, Denmark, and Great Britain reject the euro?
People who work around radioactivity wear film badges to monitor the amount of radiation that reaches their bodies. These badges consist of small pieces of photographic film enclosed in a light-proof wrapper. What kind of radiation do these devices monitor?
A. alpha radiation B. gamma radiation C. beta radiation D. all of the above
During the summer along the coast, at which of the following times is a sea breeze usually strongest and best developed?
A. just before noon B. just after sunrise C. in the afternoon D. just before sunset