Sulfer dioxide: a)creates a reddish-brown haze b)is a secondary air pollutant c)has an irritating odor and is colorless d)is realatively harmless to the environment

Match the type of region in column 1 to the example in column 2 functional region: functional formal perceptual example: the united states of america the slums of detroit the houston metropolitan area

Which of the following statements about the migration of workers to other countries is false?

Wegeners theory of continental drift states that the continents have changed throughout history while the theory of plate tectonics