One useful point about the moment magnitude scale is that it is logarithmic, where each whole number represents a factor of 32. Therefore, the difference in two whole numbers of the magnitude means that an earthquake is 1,000 times stronger. For example, a 7.0 magnitude earthquake releases 1,000 times more energy than a 5.0 one.
The answer is copper. Nonrenewable resources are those that cannot be readily/naturally replaced at rates that match those of consumption (an aspect that allow renewable resources to be sustainable). Copper are made deep in earth at very slow rates hence do not readily renew themselves. Organisms, on the other hand die, and are naturally replaced by offspring.
Out of the choices given, the conclusion that can be made is that in both cases, societies were brought into contact through trade. The cultural exchanges that went along with that trade enriched those societies. The correct answer is C.
I recommend you to try analyzing this excerpt in order to compile your own response towards the depicted situation. As for me, there is one stated truth: if someone is really wise and assured that his sphere of occupation is reasonable , this person would never persuade people to believe him/ her and stand on his/her side, because this person does not have doubts about that. Does not matter in what such people believe, they do not have to prove it to anyone who does not shares their views.