Salinity refers to the concentration of dissolved salts in water, typically expressed in parts per thousand (ppt) or grams per liter (g/L). It is a critical factor that influences the distribution and types of organisms found in aquatic environments, affecting both freshwater and marine ecosystems. Salinity levels can vary greatly depending on location, depth, and environmental conditions, playing a key role in shaping the biodiversity and productivity of aquatic biomes.
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