Gatsby was rude, and it made Nick suspicious.
"I think he hardly knew what he was saying, for when I asked him what business he was in he answered, “That’s my affair,” before he realized that it wasn’t the appropriate reply.
“Oh, I’ve been in several things,” he corrected himself."
Two independent clauses can be joined by a semicolon and a coordinating conjuction
I think it might be indifference
It is like any other organism, humans adapt to the conditions where they live. An Eskimo does very well in the north of Canada. They can live on the diet that nature provides for them 10 months of the year. They likely would not do well on the Hawaiian Islands. The conditions are quite different.
We need diversity because agricultural exports come from a land that that can best grow or feed them. We are a complex species and have discovered that we need all sorts of things to keep us healthy. A mango or avocado is quite different from a loaf of bread yet all three help to keep us in good shape and all three are grown under entirely different circumstances.
We need diversity because of preference or necessity. We live where we work. Drilling for oil in countries which are harsh environmentally is an example of necessity and we have to overcome that adversity. On the other hand, given how we have "civilized" the environment, we can live anywhere and for me a warm place is preferable to a cold one.
