PAPER Topics

Start of Term Paper
Rain is an essential ingredient for life. The water provided by rain allows all life on Earth to survive. It waters our crops, allowing us to grow food for us to eat and food for the animals we raise for meat and milk. Although rain is natura ....

Middle of Term Paper
... from natural sources, but most is human made. The burning of coal and oil (fossil fuels) by factories, homes, and cars is the main source of chemicals that cause . Power stations emit large amounts of sulfur dioxide and also nitrogen oxides, while car exhaust contains large amounts of nitrogen oxides. Once is formed, it can stay up in the clouds for a long time. These clouds can be carried off by the wind to other areas, sometimes hundreds of miles away, where they eventually fall to the Earth as or snow. This is called transboundary pollution. For awhile some people believed that by building high smoke stacks they would be sending t ...