Instant Access To 100,000+ Essays!

What is a Virus? Viruses are found in almost all parts of the earth, including the Arctic and infect nearly every form of life including unicellular organisms to human beings. First, it is important to know what exactly a virus is. A virus is a small capsule made of lipid membranes enclosing certain proteins. This capsule contains usually one or two strands of either RNA (Ribonucleic Acid) or DNA (Deoxyribonucleic Acid). DNA and RNA are long molecules, which contain genetic codes or information. This is distinguishing feature of viruses in comparison to the host, which has both DNA and RNA. The virus exists for one purpose - to duplicate. For my project I will be talking about four viruses: Ebola, West Nile, Rabies, and Aids. 1. Ebola The intrusion of the Ebola virus is a result of mans closer contact with the rainforest. According to the G.I.S. (Geographic Information Systems) the Ebola Virus could come into contact with humans because of the destruction of the rainforests. If the forest had not been disturbed then the