Water drops on the hydrophobic surface of grass. In chemistry, hydrophobicity is the physical property of a molecule (known as a hydrophobe) that is seemingly repelled from a mass of water. (Strictly speaking, there is no repulsive force involved; it is an absence of attraction.) In contrast, hydrophiles are attracted to water.
Ocean salinity is generally defined as the salt concentration (e.g., Sodium and Chlorure) in sea water. It is measured in unit of PSU (Practical Salinity Unit), which is a unit based on the properties of sea water conductivity. It is equivalent to per thousand or (o / 00) or to g/kg.
Salinity is the presence of salt in the land surface, in soil or rocks, or dissolved in. water in our rivers or groundwater. There is salt in many parts of the Australian landscape. When wind and rain weather rocks that contain. salt, or carry salt from the ocean, then salt is left in the landscape.