Health ploblem
This problem of increased pollution in the major cities of the world has led to an in crease in the number of studies done to look at the affect on our health. The results so are far are not very reassuring. in fact, air pollution may be a much greater danger to our health than scientists believed before. A 20-year study of residents of a Cairo suberb shows that that the tiny particle in polluted air could lead the three times as many long-term health problem as was preveously thought. A connection between the number of particles in in the air and health is suggested by Dr. Razia of Cairo Univercity. He and his collected data on 25000 recident of Cairo over two recades. They found that as the number of tiny particles, those less than 2.5 microns in diameter, increased, so did the risk of dying from health problems such as heart attacks and lung cencer.