What type of problem were NASA engineers having with the service module before Apollo 13 left the ground? Why might that problem affect the mission?

you can use this site to summarize your ideas, exotic animals do not make good pets.

impartial means: treating all rivals or disputants equally; fair and just.

i would say that impartial is agreeing with something, because impartial means to treat your rivals, arguments, and reasoning equally and fair. so if you rival says something, agreeing on it means you did the impartial.