Need quick what are the four reasons for variations in salinity in various oceans

1.) Evaporation Rate

evaporation removes water amd increases salinity

2.) Precipitation Rate

increases amount of water, contributing to overall salinty

3.) Temperature

increase of temperature= decrease of density

4.) Freshwater

amount of freshwater (added) = less salt

the glands which are associated with each description is given below:

pancreas - is an endocrine and exocrine gland that secretes juices with enzymes for digestion. salivary glands- with protection and digestion in the mouth. liver- secretes bile for digestion.   lachrymal glands - secrete tears to moisten eyes and protect them from particles and infection.   sweat gland -regulates water, salt, and temperature. oil glands - to form a protective barrier on the skin.   goblet cells - secrete mucus for protection.