A galvanic cell has two electrodes that are made of the same material, but with half-cells that differ in concentration. In this case, which of the following correctly describes the cell potential? a. The cell potential is positive.
b. The cell potential is negative.
c. The cell potential is zero.
d. Depends on the identity of the electrodes.

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the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.

answer; capital earns interest; entrepreneurship receives a profit or incurs a loss;