Answer:
The reasons that cities boomed during the Middle Ages are more employment opportunities, increased trade, and growing interest in culture and art.
A good way to earn money is to do what I do. I make bracelets and I go to markets and put them on display for 1$ for one bracelet. Or the package deal would be 10$ for ten bracelets. Or you can walk dogs, 5$ for each dog and walk. I've done both of these and I've gotten payed good money and have been good on this stuff. And good places to travel is all based on your personality.
Temperature and density increases from the crust to the core.
The answer is B. The lines of Latitude are about 69 miles apart. Each line of latitude is 1 degree of the angle of circumference of the earth, with parallel latitude lines lined up going East-West. Since the lines are stacked up north to south, your latitude describes your North/South position on the earth. Since these lines are parallel, their distance in generally constant.
I think it is the 3rd answer choice.