At area 1, a stream empties into the ocean. at area 2, precipitation enters the ocean in the form of rainfall. at area 3, evaporation takes place at the ocean’s surface. in which areas does the salinity of the ocean decrease?

1 and 2

Explanation:

i just took the exam on plato, plus its common sense and it cannot be 3 because it has nothing to do with it.

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

i think the answer is terrae but not 100 percent sure. ▓▬▬ §