Answer:
Powered by. An urban area is the region surrounding a city. Most inhabitants of urban areas have nonagricultural jobs. Urban areas are very developed, meaning there is a density of human structures such as houses, commercial buildings, roads, bridges, and railways. "Urban area" can refer to towns, cities, and suburbs.
If the story only has round characters, there will be too much information to take in, and it will be very long.
If the story only has flat characters, it will be boring, because nothing will change.
A good book/story should have both flat and round characters, because people would enjoy watching as the round character (usually the main character) changed, with flat characters surrounding them.
Answer:
This all depends on context, but in general:
Neutral: Generally having a middle ground opinion rather than being on an extreme side.
Positive: Usually refers to one's attitude, optimism. Can also mean certainty.
Negative: Not positive, could be referring to pessimism or seeing the bad side of things.