A freshwater organism is any celled living creature that can only survive in fresh(non-salted) water.
phytoplankton
It is the farming of saltwater and freshwater organisms
Acquaculture
The extinction rates of terrestrial and freshwater organisms varies per location. This is largely dependent on other growing and declining populations.
Plankton
Ecology addresses the relationships between organisms and with their environment. Freshwater ecology studies those relationships in freshwater (non-salty water) environments.
consumers are organisms that eat other organisms. Depends on what level consumer it is ;).
Gills
plankton
organisms in fresh water had to adapt. they first lived in the oceans.
They bring freshwater to land organisms
An estuary provides habitat for a diversity of organisms