... a major problem throughout the world. It comes in many forms, such as air pollution, noise pollution, water pollution, and many others. Chemical pollution is unique to the 20th century. New "super chemicals" have been in use by the general public since as early ... % of the males had unusually small penises. In mid-April of 1988, seals began washing up on the shores of Northern Europe. Scientists suspected pollution or an infectious disease. Reports began coming in from all over northern Europe about dead seals washing up on the beaches. By December almost 40% ... symptoms were differen...

• Word Count: 2382
• Approx Pages: 10
• Has Bibliography
• Grade Level: High School

... the evolution of new, better-adapted types of organisms that have displaced earlier forms. Commercial exploitation, damage caused by non-native plants and animals introduced in to an area and pollution also contribute to the extinction of species According to many biologists the human population is the primary reason for the increase in the rate of extinction. Since 1600 about 1100 ... species have became extinct. The rapid disappearance of species was ranked as one of the planet's gravest environmental worries, surpassing pollution, global warming and the thinning of the ozone layer, a...

• Word Count: 2997
• Approx Pages: 12
• Grade Level: High School

... . As such, they are invaluable agents in keeping the level of carbon in the atmosphere stable. As forests are destroyed worldwide, especially by burning, carbon dioxide is released into the air, adding to the stock of greenhouse gases that are now warming our planet and changing its climate. Carbon dioxide accounts for half of global warming, and fossil fuels account for ... Future Population of the World. London: Earthscan Publications Ltd., 1994) 9. Ramphal, Shridath. Our Country, The Planet. London: Lime Tree, 1992. 10. Schlaepfer, Rudolph. Long Term Implications of Climate Change and...

• Word Count: 1244
• Approx Pages: 5
• Has Bibliography
• Grade Level: High School