Residues of synthetic pesticides have been recovered in many major river systems, soil, fish, reptiles, birds, and humans as well. ... Organic phosphates destroy enzymes and target the central nervous systems in organisms causing spasms, convulsions, and death. ... According to the EPA, "Acute (short-term) exposure of humans to parathion may result in nausea, vomiting, abdominal cramps, diarrhea, excessive salivation, headache, weakness, difficult breathing, blurring or dimness of vision, convulsions, central nervous system depression, paralysis, coma, and respiratory failure; ...

• Word Count: 1256
• Approx Pages: 5
• Grade Level: High School

If communism was allowed to slip into the continent, it was only a matter of time before it spread throughout the landmass, up into Central America and on the American frontier. ... A true leader, Eisenhower directs his people to think rationally rather than to follow the hysterical culture that seems to be engulfing a nervous American population. ... With the creation of a national system of interstate highways, the United States was more connected than ever. ... A "white flight" was now very possible and decreased the level of stress among nervous homeowners. ...

• Word Count: 1296
• Approx Pages: 5
• Grade Level: Undergraduate

In South Africa, it is called dagga, in Central Africa it's called djoma, in Turkey its called kabak, in Brazil it's called liamba, in Morocco and Algeria its called kif, and in India and Jamaica it's called ganja (Jaffe, Encyclopedia Americana 317-319). ... THC produces its actions mainly on the nervous system, the heart, and the blood vessels (science.howstuffworks.com/marijuana2.html). ... THC can inhibit normal disease preventing reactions of the immune system and therefore the user would be at a greater risk for developing infections (Microsoft Encarta 2001, Marijuana). ...

• Word Count: 1722
• Approx Pages: 7
• Has Bibliography
• Grade Level: High School

The brown recluse is a small brownish spider found mainly in the central and southern United States. ... When injected into its victim, this antitoxin sends thousands of electrical impulses throughout the nervous system, causing many different symptoms. ...

• Word Count: 2262
• Approx Pages: 9
• Has Bibliography
• Grade Level: High School