What Is the Difference Between an Oligotrophic Lake and Eutrophic

Multiple Choice

What is the difference between an oligotrophic lake and eutrophic lake?

A) An oligotrophic lake is enriched; a eutrophic lake is unenriched.
B) Oligotropic lakes are found only in northern latitudes; eutrophic lakes are found only in southern latitudes.
C) An oligotropic lake is defined as less than 40 meters deep; a eutrophic lake is defined as over 40 meters deep.
D) An oligotropic lake has a low level of nutrients; a eutrophic lake has a high level of nutrients.
E) An oligotropic lake has a high level of nutrients; a eutrophic lake has a low level of nutrients.