1. Estuaries may be either brackish or
freshwater systems.
True
O False

False - Estuaries are formed due to both brackish and freshwater.

Explanation:

Hope this Helps!!!

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

its going to be mutualism cuz they both benefit from the relationship.

~batmans wife dun dun