Balance has been the factor keeping all those gases for millions of years. Now man is upsetting such balance thus paying a high price by the problems that he is facing. The ozone layer is being destroyed. The damage to the ozone layer will take fifty years to return to normal. The loss of ozone is believed to be caused by different chemicals and pollutants that decrease the concentrations that occur naturally in the stratosphere.
Air pollution is the accumulation in the atmosphere of substances that endanger human health.
Some major sources of pollution are burning oil, coal and natural gas which are power and heat generators. Others are the burning of solid wastes, industrial processes and vehicles. Whenever these are burned, waste products are polluting the air. In Hawaii, measurement of carbon dioxide suggests that it is increasing in the atmosphere at a rate of twenty percent every year. It may alter the earth's climate increasing the average global temperature.