An average value for the salinity of seawater could be 35 Ppt
When seawater evaporates, there is a relative increase in its salinity. Evaporation reduces the seawater level thereby resulting to an increase in its salt concentration. However there is always a balance when fresh water flows into the seawater.
The average salt content of seawater as measured in parts per thousand (ppt) would be 35 ppt. The salinity of seawater is usually 35 parts per thousand in most marine areas.
The question is incomplete. The correct question is
What is the average salt content of seawater as measured in parts per thousand (ppt)?
a. 350 ppt
b. 3.5 ppt
c.35 ppt
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