Question

The principal characteristic that determines whether an aquatic ecosystem is classified as marine or freshwater is _______. a. surface area b. water depth c. temperature d. salinity

Answer 1

BRO its D

Step-by-step explanation:

this person typed too much.

Answer 2

The question is the principal characteristic that determines whether an aquatic ecosystem is described as a marine or fresh water is - the correct option is salinity. Salinity is defined as the concentration of salt in a water body. The salt concentration is used to determine whether the water is classified as fresh water or salt water. Marine salinity is about three point five percent, therefore, it is classified as salt water.