The Precambrian comprises what percent of geologic time?
a. 99%
b. 88%
c. 77%
d. 66%
e. 55%
B
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A) latent heat of evaporation B) latent heat of fusion C) sensible heat D) temperature
Structural flood controls often increase overall flood hazard
Indicate whether the statement is true or false
The largest repository of freshwater in the world is in ice-covered Antarctica
Indicate whether the statement is true or false
Photovoltaic (PV) technology is best described as ________
A) using sunlight to generate electricity B) trapping sun's heat and storing it for many varied uses C) passive solar technology D) using sun's energy to warm a room without mechanical devices E) using mirrors to concentrate sunlight, to heat water and produce steam for electricity generation