A thunderstorm adds freshwater to the ocean. What does this do?

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Explanation:

When salt dissolves in water, it comes apart into ions with positive and negative electrical charge. That's actually what we mean by calling a material a salt. Ordinary table salt forms Na+ and Cl-. These charged particles are dragged opposite ways by an electrical field, making an electrical current. So that's how salt water conducts.

the answer to the question is "five to eight weeks after the test date"