The greatest threats to groundwater supplies are
A) groundwater pollution and depletion.
B) global warming and the construction of dams.
C) increased evaporation and increased precipitation.
D) evapotranspiration and runoff.
A
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Which rock is described below? "This first-formed metamorphic rock preferentially splits along planes of parallel microscopic micas."
A) slate B) phyllite C) schist D) gneiss
Population momentum helps explain which of the following scenarios?
A) Most of the increase in the population of the United States is a result of immigration. B) China's population continues to grow despite their total fertility rate being 1.8. C) Increasing educational opportunities for women decreases the birth rate in India. D) Some European counties are offering incentives to couples who have more than one child.
Which of the following is considered a young mountain range?
A) The Andes Mountains B) The Himalayan Mountains C) The Appalachian Mountains D) The Ural Mountains
Most of the radiation emitted by a human body is in the form of
a. ?ultraviolet radiation and is invisible. b. ?visible radiation but is too weak to be visible. c. ?infrared radiation and is invisible. d. ?humans do not emit electromagnetic radiation. e. ?the whole electromagnetic spectrum.