Which section of a stream is characterized by the absence of fish and found downstream from the release of oxygen-demanding wastes and heat?
A)clean zone
B)decomposition zone
C)septic zone
D)recovery zone
E)dead zone

Question

Quizplus · Accepted Answer

The septic zone is the section of a stream that is characterized by the absence of fish and found downstream from the release of oxygen-demanding wastes and heat. In this section, the dissolved oxygen levels are often too low for fish to survive due to the decomposition of organic matter. The recovery zone is the section where signs of life begin to reappear as the stream's water quality improves. The clean zone is the section where the stream is healthy and free of pollutants, while the dead zone is a term used to describe areas of aquatic habitats where oxygen levels are so low that life cannot survive.

Which Section of a Stream Is Characterized by the Absence