Discussion
Assertion (A) : Salinity of the ocean water is not same everywhere.
Reason (R) : Salinity of the ocean surface is exclusively controlled by temperature.
Select the correct code from the following codes :
Answer: A
The answer is (A) is true but (R) is false.
Assertion (A) is correct: ocean salinity varies from place to place, from under 10 parts per thousand in the Baltic to about 40 in the Red Sea, against an average of about 35.
Reason (R) is false because of the word exclusively. Surface salinity depends on several factors: evaporation (helped by temperature and wind), precipitation, inflow of fresh river water, freezing and melting of ice, and ocean currents that mix water. Temperature is only one of them, so the options calling (R) true are wrong.
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