CDM UNIT 6: ECOSYSTEMS

 AQUATIC ECOSYSTEMS:  FRESHWATER AND SALTWATER.

FRESHWATER: 

It is the water that is used for drinking or irrigating crops.

Are differentiated by movement:

- FLOWING WATER: Streams and rivers.

- STILL WATER: ponds, lagoons, lakes and swamps.

SALTWATER:

Are differentiated by the amount of light.

- COAST:  Shallow area with lots of light.

There are multicellulare algae.

- OPEN SEA: They are deep waters.

There are unicellular algae.