Which is a unique characteristic of estuaries?

Question

Quizplus · Accepted Answer

Estuaries are characterized by the mixing of fresh and salt water due to the influence of tides and river flow. This makes them unique environments with their own set of physical and biological characteristics. While some estuaries may have aquatic woody vegetation and a large variety of benthic organisms, these are not necessarily defining characteristics of all estuaries. The seasonal overturn of water stratification, on the other hand, is a common occurrence in many freshwater bodies but not typically observed in estuaries.

Which Is a Unique Characteristic of Estuaries