Question : Sea water is saltier than rain water because
Option 1: rivers wash away salts from earth and pour them into the sea
Option 2: sea beds have salt producing mines
Option 3: sea animals are salt producing
Option 4: the air around the sea is saltish
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Correct Answer: rivers wash away salts from earth and pour them into the sea
Solution : The correct answer is rivers wash away salts from earth and pour them into the sea.
Rivers wash away all the salts and sediments from mainland into the sea increasing the salinity of the sea compared to the rivers. The other reason is due to evaporation of water from oceans and seas, oceans remain more concentrated making it more saline. Sea water has a salinity more than 32 parts per thousand.
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