Answer:
D. A substance, energy source, or organism used by humans
Explanation:
Its not man made like the others
This is true.
The definition of megalopolis is that it is a large urban area, huge and densely populated. St. Petersburg is definitely one, however, Miami is relatively small compared to other megalopolises so it might not fall within that category.
Answer:
Nenets Autonomous Okrug
Explanation:
I would choose Nenets Autonomous Okrug, because it has an oil-rich region. And where I live, we use a lot of oil, so I think it would be good to trade with Nenets Autonomous Okrug to get more oil for my country.