... of less than 5.6 is considered to be acid precipitation. Readings of pH 2.4--as acidic as vinegar--were recorded during storms in New England. During one particularly acid summer storm, rain falling on a lime-green automobile leached away the yellow in the green paint, leaving blue raindrop shaped spots on the car. Scientists have found that pollution in the air from the ... are sometimes washed from trees and other surfaces by rainstorms. When this occurs, the runoff water adds the new acids to the acid rain, making a more acidic combination than the falling rain by itself. One of the ...

• Word Count: 1344
• Approx Pages: 5
• Has Bibliography
• Grade Level: High School

... Greenland waters and driven by bitter winds it becomes gradually colder & saltier once again sinking into the deep. In reality much of the water that sinks in the Atlantic never leaves and other eddies and gyres across the oceans mean that this really is a simplified image of the conveyor belt but essentially the basic idea is true. The conveyor "transports heat ... years ago). It has been discovered that one of the reasons for large climate changes are the Milankovitch cycles; cyclical changes in earths orbit which change the amount of sunlight falling on the northern hemisphere. We ha...

• Word Count: 1893
• Approx Pages: 8

... was about one billion, it now currently rests at just over six billion. The effects of overpopulation have been tremendous, such as resource depletion, different forms of pollution, and the falling of nature admiration and sacredness. Although some believe overpopulation will be the gun that blows away the human race, others believe that the misuse of resources is to blame for ... the view nearby, or how many walks has someone been on in the mountains only to find beer cans and cigarette butts stuck in cracks or laying in a pile of leaves? The sound of silence has also lost its sacredne...

• Word Count: 1888
• Approx Pages: 8
• Grade Level: High School