What causes most soil erosion?
A. severe weather
B. wind, water, and human activities
C. water, human activities, and wild animals
D. volcanoes and earthquakes
E. grazing
Answer: B
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What type of slope failure has occurred in the Slumgullion area of Colorado?
A) A huge rock fall that formed Colorado's second largest lake B) A debris flow that came down Big Thompson Canyon C) A debris avalanche that raced downhill at breathtaking speeds D) A slow-moving earth flow
Much of the U.S. federal regulatory structure set up in the 1970s to protect the environment has been enforced by subsequent presidents.
Answer the following statement true (T) or false (F)
Emissivity
A) can have values greater than one. B) will always be less than one for any object that is not a black body. C) is typically .1 or below for most natural surfaces encountered on Earth. D) is constant for the atmosphere.
The broad strip of land built up by sedimentation on either side of a stream channel is
A. a flood plain B. an alluvial fan C. a delta D. a meander