The contraction of an ice sheet
A) is an example of a negative feedback mechanism.
B) increases its overall albedo.
C) leads to overall warming in the vicinity of the ice sheet.
D) would argue against global warming.
E) all of the above
C
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In the late Paleozoic Era, continents coalesced to form a supercontinent called ___.
a. Supercontinent Rodinia b. Supercontinent Pannotia c. Supercontinent Laurentia d. Supercontinent Pangaea
Salmon introduction in the Great Lakes has brought in millions of dollars from sportfishing, yet environmentally it has
A. decreased migratory bird populations. B. improved water quality. C. increased exotic invasive fish populations. D. decreased native fish populations and disrupted spawning.
Which condition may exist when the potentiometric surface is above ground level
A) groundwater recharge of the aquifer. B) artesian water may rise to the surface. C) drawdown in the well. D) a confined aquifer may become an unconfined aquifer.
The land-use concept of using the same piece of land for two or more purposes simultaneously is termed
A. conservation. B. restrictive zoning. C. sequential use. D. multiple use.