Acid Rain Acid rain is caused by extra amounts of sulphur dioxide and nitrogen oxides. Natural sources of sulphur oxides and nitrogen oxides do exist, but are balanced by nature. Normal rain reacts with alkaline chemicals from the region's bedrock that are in the air, soils, lakes, and streams. This neutralizes the rain. However, if rain is more highly acidic, then the natural neutralizing chemicals can eventually become depleted. This is what is happening with …showed first 75 words of 723 total…

…showed last 75 words of 723 total…destroyed, holes will begin to form, as seen over Antarctica and the Arctic. The amount of ozone in the stratosphere at any one time is subject to natural variation caused by sunspots, volcanic activity and atmospheric patterns. For example in areas of volcanic out gassing the ozone is decreases. The past 15 years show significant decreases in the ozone layer. This is allowing harmful UV radiation through to us. Now more than ever sunscreen is needed.