Part one of term paper
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 ...

Part two of term paper
... other industrial, commercial, and residential combustion processes. These pollutants come from the use of coal in the production of electricity, from smelting, and from the internal combustion engines in most cars. Once released into the atmosphere, they are converted into such pollutants as nitric acid and sulfuric acid, both dissolving easily in water. This results in acidic water droplets that can be carried by prevailing winds, returning to Earth as acid rain, snow, or fog. This effects th ...