What is the main reason we group north africa and southwest asia as a region?

They make up the middle east, or what was the center of the muslim world during the middle ages

If you will look at the sun through magnifying glass then the glass will defocus your eyes and so damage will be reduced.

Population of this city. also, look for information on available public transit, bike-sharing, and other commuting options. use the information you find and write about it promoting alternative transportation