A decline in sulfur dioxide has led to a lower pH in precipitation in the Mid-Atlantic states
Indicate whether the statement is true or false
FALSE
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In alley cropping:
a. Crops are planted between hedgerows of trees or shrubs that are used for fruits or fuelwood. b. Terraces are built to prevent swift water runoff. c. Plowing runs across slopes. d. Special tillers are used so the topsoil is not disturbed. e. A row of crops alternates in strips with another row of crops.
Although the polar regions radiate away more heat energy than they receive by insulation in the course of a year, what prevents them from becoming progressively colder each year?
A. circulation of heat by the atmosphere and oceans B. release of latent heat to the atmosphere when polar ice melts C. conduction of heat through the interior of the Earth D. concentration of Earth's magnetic field lines at the poles
Why does lead have so many industrial uses?
A) It is extremely cheap to mine and process. B) It has very strong bonds, making is a valuable hard mineral used for vehicles. C) It is a metal, and therefore is an excellent conductor of electricity and is used for power lines. D) It can be easily cast, molded, and shaped, as well as be used for its chemical properties in glazes, batteries, and gasoline.
The spatial distribution of soccer during the twentieth century is an example of
A) folk culture. B) habit. C) popular culture. D) taboo. E) relocation diffusion.