Answer: Just find the diffrence in those two
Explanation: The diffrence bewtween a neighborhood and an empty lot is that they nothing to do with eachother, and a neighborhood is where you live, and an empty lot is nothing *Literally.
Answer:
It is true, quality cannot be a sometimes thing.
Answer:
The main problem with relying on nature to start a flame was that Fire was likely hard to find, requiring a "long journey and a deal of trouble."
Explanation:
If nature started a fire, the people would have to carry that fire to the place where they lived at that time and guard it as much as they could. These journeys were sometimes long and dangerous and it was not a reliable way of procuring fire.
Answer:
Research questions are usually made for the specific reason of findining more information about what you're researching. It may be able to be used for other research problems but it will always be designed to be a part of the original research problem.