What is a megalopolis? a. a large city surrounded by many smaller suburbs. c. a large area of land devoted to shipbuilding. b. the description for the large interconnected cities in the northeast. d. the description for the cities devoted to international business in the northeast.

The large connected urbane area from boston to washington, d.c. is often referred to as

Explain how a convection current in the earth is formed.

Brian's school locker has a three-digit combination lock that can be set using the numbers 5 to 9 (including 5 and 9), without repeating a number. the probability that the locker code begins with a prime number is %. the probability that the last digit of the locker code is an odd number is %.