In addition, the hoseâs volume fluctuation decreases the hydraulic system reaction time and efficiency. By comparison, the expansion of metal tube is negligible, which makes it a preferred choice for applications requiring accurate positioning.
Aquatic Ecosystems. Most aquatic ecosystems are limited by salt concentration and the availability of sunlight, oxygen and nutrients. For example The Dead Sea is âdeadâ because the salinity is so high and nothing can grow in it.
4. Types of Ecosystems. Ecosystems come in three types. These are freshwater ecosystems, terrestrial ecosystems, and ocean ecosystems. First, a freshwater ecosystem can be defined as a small area equal to just about 1.8% of the earth's surface. This ecosystem has variety of life such as flora and fauna. Freshwater plankton is also available.