Multiple choice

Salinity in ocean water is decrease when

  1. evaporation is more

  2. wind velocity is high

  3. rainfall is heavy

  4. humidity is high

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ocean salinity decreases when freshwater input increases. Heavy rainfall (C) adds fresh water to oceans, diluting salt content. High evaporation increases salinity by removing water while leaving salts behind. Wind velocity and humidity affect evaporation rates but don't directly decrease salinity like rainfall does.