URGENT PLEASE HELP!! Each shell (principal energy level) of quantum number n contains n subshells.

Possible answers:

A. True

B. False

If you are facing north. turn 90 degrees left. turn 180 degrees right. turn round to reverse your direction. turn 45 degrees left. turn around to reverse your direction. in which direction are you facing now?

What is the quickest way to resolve problems from a supply shock?

A. describe the model of urban structure most often observed in mega-cities in developing countries. explain how this model differs from common urban structures in north america. b. describe at least two factors leading to the growth of mega-cities in developing or least-developed countries. c. identify and explain two factors that led to the formation of squatter settlements in mega-cities in developing countries.