GENERAL KNOWLEDGE

Detailed explanation-1: -The term “salinity” refers to the concentrations of salts in water or soils. Salinity can take three forms, classified by their causes: primary salinity (also called natural salinity); secondary salinity (also called dryland salinity), and tertiary salinity (also called irrigation salinity).

Detailed explanation-2: -Salinity (/səˈlɪnɪti/) is the saltiness or amount of salt dissolved in a body of water, called saline water (see also soil salinity).

Detailed explanation-3: -Salinity is a measure of saltiness. The more salt in a body of water, the higher its salinity. Fresh water is less than 0.1 percent salt. Ocean water is, on average, about 3.5 percent salt.

Detailed explanation-4: -The concentration of salt in seawater (salinity) varies with temperature, evaporation, and precipitation. Salinity is generally low at the equator and at the poles, and high at mid-latitudes. The average salinity is about 35 parts per thousand.