In Marine Ecosystems the Highest Concentrations of Persistent Organic Pollutants

question 67

Multiple Choice

In marine ecosystems the highest concentrations of persistent organic pollutants (POPs) will be found

• A) in the bottom sediments where the remains of dead organisms eventually accumulate.
• B) in the bodies of tertiary and quaternary consumers which represent the transfer of the energy and nutrients from the lower trophic levels.
• C) in the water since POPs are recycled by decomposers just like any other nutrient.
• D) in marine producers because they form the base of marine food webs and are the most numerous type of organisms.

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