Oligotrophic, mesotrophic and eutrophic water systems

Oligotrphic is very clear water and has almost not plants, animals or nutrients in its waters.

Mesotrophic is in between oligotrophic and eutrophic! It has a medium amount of plants, animals and nutrients! It's not as Merky as eutrophic waters but its not as clear as olitrophic waters

Eutrophic is where the water is completely Merky and it has an abundance of plants, animals and nutrients.

It is important to understand each of these different types of water because they are the life line of freshwater ecology and must-knows for all of it.
(Pictures in order: oli, meso and eutro)