Answer:
The rivers could flood too much (negitive). The rivers helped farm, transportation, drinking water, and irrigation(positive).
Explanation:
I hope this helps you. If not I can type more.
Don't tell that that you're doing it to be with you friends, make it more about the academics, or tell him that it's more efficient for you to be in "class a" than "class b".
If you were trying to convince her that these types of labels do have benefits, you might tell her that mental health professionals use labels to <span>do all of these things:
-communicate about their clients,
-comprehend the underlying causes of psychological problems
-choose the most effective course of treatment</span>
