Salinity and density share a positive relationship. As density increases, the amount of salts in the water—also known as salinity, increases. Various events can contribute to change in the density of seawater. Salinity can decrease from the melting of polar ice or increase from the freezing of polar ice.
This is true, animals of the same species are usually the same type of animals. Like dogs with other dogs, and cats with other cats.
Reduce Behavior efficiency
The claim, evidence , and the rationale.