I believe there are many more, but 3 of them are lakes, streams, and ponds.
they are both marine ecosystems
flowing water and standing water
Rocks and sand.
Phytoplankton
reshwater ecosystems are anything from ponds and lakes to rivers and streams. Anything that lives in/around fresh water sources. Even swamps are considered fresh water ecosystems.
Brackish ecosystems are formed by the mixture of salt and fresh water.
There are three water ecosystems: saltwater ecosystem, freshwater ecosystem and brackish water ecosystem.
Fresh water ecosysystems are located in every continents.
Delta
freshwater ecosystems are fresher
Water sunlight and air
The Nitrogen Cycle, The Carbon Cycle,and The Water Cycle