Essentially there are two main types, Static Water(called lentic) and Flowing Water (called lotic).
There are two general terms that categorize freshwater ecosystems. Lentic refers to standing bodies of water (lakes, ponds, and inland wetlands) while lotic refers to flowing systems (streams and rivers).
The factor that divides freshwater ecosystems into two main types is the water flow rate. Ecosystems with slow-moving or still water are called lentic ecosystems, such as lakes and ponds, while ecosystems with fast-moving water are called lotic ecosystems, such as rivers and streams.
Aquatic ecosystem is broadly divided in two major class Marine ecosystem Fresh water ecosystem now fresh water ecosystem again sub divided into lentic ecosystem, and lotic ecosystem Aquatic ecosystem is also studied under hydrobiology
What is the difference between the two words, phagia, and phasia
You need two things before you can discuss difference between them!You need two things before you can discuss difference between them!You need two things before you can discuss difference between them!You need two things before you can discuss difference between them!
the difference between two equal fractions is zero.
The main difference between the two products is their ingredients.
There is no difference between the two products.
There is no difference between the two.
There is no difference in value between "equal" fractions: the difference is zero.
The equation for calculating the phase difference between two waves is: Phase Difference (2 / ) (x) Where: Phase Difference is the difference in phase between the two waves is the wavelength of the waves x is the difference in position between corresponding points on the waves