What environmental factor makes it very difficult for organisms that live in estuaries?
A) The movement of water as the river flows into the ocean.
B) The constant fluctuation in the salinity of the water as the salt water and fresh water mix.
C) The fluctuating nutrient levels as the river bring different levels of nutrients to the estuary.
D) The change in water levels as the tide ebbs and flows.
E) The change in the temperature of the water since the river water is colder than the ocean.

Question

Quizplus · Accepted Answer

The constant change in the salinity of the water is difficult to organisms to live in since they must regulate the water that is taken into their bodies. Marine fish do not survive in fresh water and freshwater fish do not survive well in a marine environment. The same is true of plants.Bloom's

What Environmental Factor Makes It Very Difficult for Organisms That