How far must one travel to get away from Earth's gravitational field?
A) to a region above Earth's atmosphere
B) to a region well beyond the Moon
C) to a region beyond the solar system
D) Forget it; you can't travel far enough.
D
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If you were to increase the pH of rain water the concentration of dissolved CO2 would
A) increase because the acid form is neutralized. B) decrease because you are adding acid. C) decrease because the acid form is neutralized. D) increase because you are adding acid.
Errors in address geocoding can be caused by:
A. outdated reference database B. missing ZIP codes C. misspelling of street names D. all of these are correct E. both misspelling of street names and missing zip codes
A 300-meter-thick cloud cover can reflect no more than 14 percent of incoming solar radiation
Indicate whether the statement is true or false
Which is the most dramatic change in the geographic distribution of African Americans in the United States?
A) rural to urban within the state B) change to sharecropping C) relocation to northern cities D) movement out of inner-cities E) relocation to coastal cities