They are caused by human influences and natural ecological processes
The salinity can simple be defined as the amount of salt that is contained in the ocean waters.
The salinity of the ocean waters comes from the interaction of the chlorine and the sodium which are in abundance. With their interaction the salt is created, or chemically, the NaCl.
The salinity varies from place to place, and it is dependent on multiple factors, with the climate being the most important, backed by the income of freshwater from rivers and streams.
The hotter it is, the higher the salinity, because there's bigger evaporation and the salt concentrates more, and vice versa.
The waters that are near a coast, and there's a stream or a river that constantly bring in freshwater, are less saline, because the freshwater increases the amount of water on the amount of salt, thus it is much more dispersed.
Approximately 69% of earth's water is in the form of glacial ice.
A national park is a park that is protected by the federal government meaning you can not cut done trees hunt or fish without specific instruction
BeacuSe most of the ancient greek and rome stuff is there