What is the name for the pelagic community that lives in the upper limits of the permanent darkness in

the deep ocean?
a. Climax community
b. Rift community
c. Deep scattering layer
d. Benthic community


ANS: C
This community is named the deep scattering layer due to its tendency to reflect sound pulses which
make it appear like a false bottom to people above. The scattering layer itself is comprised of a dense
population of fish, squid, and other vertical migrators. Information can be found in the section
Examples of Marine Communities

Environmental & Atmospheric Sciences

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a. True
b. False
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The U.S. generates how much of the world's solid waste?

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