Can someone explain the hartford convention?

Which one of the following is not a good procedure to follow if you wish to avoid being rear ended by another vehicle

Doing a science fair project should i do cafeteria waste or solar power

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.