The difference between food webs and food chains is that food webs ________.
A. include primary producers as well as consumers
B. consist of only one trophic level
C. only outline feeding relationships among consumers
D. are more complex
E. do not take into account predators
Answer: D
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To reduce flooding risks, an environmentalist is most likely to choose
a. floodplain management b. a flood control dam c. channelization of streams d. artificial levees e. artificial levees combined with channelization of streams
A 10-kg block with an initial velocity of 10 m/s slides 10 m across a horizontal surface and comes to rest. It takes the block 2 s to stop. The stopping force acting on the block is about
A) 5 N. B) 10 N. C) 25 N. D) 50 N. E) none of the above
Channels with gradual slopes often develop a sinuous form called a ________ pattern
A) straight B) anabranching C) braided stream D) meandering stream
During Basin and Range faulting, debris shed from uplifted blocks is deposited in adjacent
basins as alluvial fans. Indicate whether the statement is true or false.