Over geologic time, erosion brings weathered sediments from mountains to the seafloor. Eventually these accumulations of sediment are uplifted onto mountain ranges by plate tectonics. This describes the:
4
Environmental & Atmospheric Sciences
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A measure of the economic impact of the young and old on the more economically active and productive members of a population is known as the
A) dependency ratio. B) expectancy ratio. C) youth-elderly cohort. D) infant mortality rate. E) crude death rate. Answer: A
Environmental & Atmospheric Sciences
Both sea surface (below) and air temperature (above) show a warming period beginning in
A) 1860.
B) 1940.
C) 1980.
D) 2010.
Environmental & Atmospheric Sciences
The horizontal transport of cold air is known as
A) convergence. B) cold air advection. C) a Rossby wave. D) speed divergence.
Environmental & Atmospheric Sciences
What is the importance of fire in ecosystem management? What is the cost of fire suppression for ecosystem health? What is the alternative to fire suppression?
What will be an ideal response?
Environmental & Atmospheric Sciences