Question

The Mississippi River flows into the Atlantic Ocean at the Gulf of Mexico. What can you conclude about the salinity of ocean water near the mouth of the river?

The salinity will be higher than in ocean water far from the river's mouth.
The salinity will be lower than in ocean water far from the river's mouth.

The salinity will be the same as in ocean water far from the river's mouth.

The salinity will sometimes be higher and sometimes be lower than in ocean water far from the river's mouth.