Which of the following is a pull factor that is causing people to leave their farms for urban life?
A) low crop prices
B) opportunities for college education
C) difficult and sometimes dangerous work
D) expansion of housing subdivisions onto farmlands
E) high cost of machinery
B
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It is possible to contribute to health problems for people in China, India, or Africa when discarding a cell phone or other electronic device in the United States
Answer the following statement true (T) or false (F)
The point where saturation begins in a rising air parcel is
A) the dry adiabatic rate. B) the moist adiabatic rate. C) the lifting condensation level. D) cloud condensation nuclei.
Tundra biomes occur
A. Only at high latitudes B. Almost exclusively on Antarctica C. Where rainfall is too great for tree growth D. At high latitudes, where temperatures are low E. At high latitudes and altitudes, where the growing season is short
Convection currents in the atmosphere are driven by
A. The different temperatures and densities of warm and cold air masses B. The surface winds, which in turn are influenced by the Coriolis effect C. The jet stream dipping down into the troposphere D. Bursts of energy emitted by the ionosphere E. Forces that scientists cannot yet explain