Introduction Paragraph

About one billion people live in slums worldwide. Slums are areas of land were people live in small shacks that are unsanitary. These shacks are often made of low quality materials and many people can live there.  Slums have a negetive effect on human populations because they can be the cause for diseases, create antisocial behavior, and they put peoples' property at risk.  Living in slums may get people sick because of unsanitary reasons.