Which of the following is a demographic factor that directly influences population distribution?
A) Climate
B) Famine
C) Taxation
D) Migration
E) Availability of water
D
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Rowland and Molina's work showed that ultraviolet light in the stratosphere causes CFCs to release ________ atoms
A) carbon B) mercury C) hydrogen D) chlorine E) fluoride
Land surface temperature (LST) is
A) often much cooler than air temperature due to vegetation cover. B) measured using a ground network of at least one station per 250,000 km2 across the globe. C) highest in areas with high albedo and dense cloud cover. D) a measure of the heating of the land surface and is distinct from air temperature.
Which source of information is NOT typically used by fire investigators in determining a fire’s cause?
a. records of past fires in the area b. weather records c. height and degree of defoliation d. post-fire aerial photos e. wind patterns during a fire
What federal agency is responsible for approving new pesticides?
A) FDA B) NOAA C) USFWS D) EPA