Question : The salt concentration (measured as salinity in parts per thousand) is greater than __________ in hyper-saline lagoons.
Option 1: 50
Option 2: 100
Option 3: 150
Option 4: 200
Correct Answer: 100
Solution : The correct option is 100 .
Hypersaline lagoons have much higher salinity levels than the open ocean, often exceeding 100 ppt. This high salt content results in unique chemical composition and diverse sediment forms. The average salinity level in ocean water is around 35 ppt, while freshwater rivers and lakes have nearly 0 ppt salinity. The Dead Sea has salinity levels exceeding 100 ppt, the Baltic Sea ranges from 5 to 10 ppt, and the Black Sea has surface salinity around 17-18 ppt which increases with depth.
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