Multiple choice

The average salinity of sea water is

  1. 35/1

  2. 27/1

  3. 80/1

  4. 42/1
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A Correct answer
Explanation

The standard average salinity of seawater is 35 parts per thousand (ppt), often expressed as 35/1 or 35‰. This means 35 grams of salt per kilogram of seawater. The other values (27, 80, 42) don't match the established scientific standard for ocean salinity.

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