Aquatic Ecosystems. 4 things determine aquatic ecosystems:. Depth Flow Temperature Chemistry. Only 3% of the Earth’s surface is fresh water. Two types of freshwater ecosystems:. Flowing water ecosystems. Standing water ecosystems. Flowing Water Ecosystems. Rivers Streams Creeks
1950 is estimated to
be over 2000 years
They contain a mixture of fresh and salt water.
of the continental
shelf and extends