Which of the following statements is true of oceans but not true of freshwater ecosystems?
A) They receive material from land mostly via groundwater.
B) Elements are buried in bottom sediments for long periods of time.
C) There is a seasonal mixing of materials.
D) Bottom waters frequently lack oxygen.
E) All of the above are characteristic of both oceans and freshwater ecosystems.

Question

Quizplus · Accepted Answer

In freshwater ecosystems, elements are usually not buried in bottom sediments for long periods of time the way they are in oceans. This is because freshwater ecosystems have less water volume and less sediment accumulation compared to oceans.

Which of the Following Statements Is True of Oceans but Not