.... in large quantities, is poisonous. The vapors are explosive andthe liquid violently flammable. Many compounds are obtained from . It is alsoused in the manufacture of and in the production of important derivatives. andits derivatives are included in the important chemical group known as . When mixed with alarge proportion of , makes a satisfactory . In Europe, mixed with other compounds has long been added to motor fuels. was isolated in 1825 by Michael Faraday, but its structure remained amystery for 40 years. The problem was perplexing because the C(6)H(6) formula indicateda high degree of unsaturation, but does not display the reactivity charact .....

.... common fuels--coal, oil, gasoline, and natural gas. Sugar, starch, and paper are compounds of carbon with hydrogen and oxygen. Proteins such as hair, meat, and silk contain these and other elements such as nitrogen, phosphorus, and sulfur. More than six and a half million compounds of the element carbon, many times more then those of any other element, are known, and more are discovered and synthesized each week. Hundreds of carbon compounds are commercially important but the element itself in the forms of diamond, graphite, charcoal, and carbon black is also used in a variety of manufactured products. Besides the wide occurrence of carbon in compound .....

.... the essence of it is rightly in its impact to the Physics community regardless of deference or validity. Please keeps these points in mind, and remember that Aristotle said, "All men by nature desire to know." One day, a promising physics student walks into a professor's office wanting to find out what physics could teach him. This student, only having a rudimentary knowledge of physics, asks, "Can you give me a definition of physics?" The sage rolls his eyes back, and rubs his temples. He replies, "Big or small?" The student baffled by this, prompts again, "Um, physics?" The teacher noticing the ignorance in the room explains, "Physics is split into tw .....

.... works out to almost 2000 species per weak, 300 per day, 10 per hour, another dead species every 6 minutes. We're trashing the planet, washing away the topsoil, paving over our farmlands, systematically deforesting our wildernesses, decimating the biota, and ultimately killing ourselves. The world is getting progressively poorer, and it's all because of populating, or more precisely, over-population. There's a finite store of resources on our pale blue dot, spaceship Earth, our small and fragile tiny planet, and we're fast apporaching it's ultimate carrying capacity. The limits to growth are finally upon us, and we're living on borrowed time. The laws of popul .....

.... to attract members of their own species. These compounds are secreted by the body in very small amounts but are never-the-less effective in producing instinctive behavior when detected by the nose. In insects and animals, most sexual and social behavior is controlled by pheromones. Humans have used perfumes for thousands of years, but there is a basic difference between perfume and pheromones. Pheromones are produced by the body and usually do not smell at all pleasant, whereas perfumes are either synthesized or extracted from natural products and are employed because of their pleasant smell. Scientific research suggests that there are human pheromo .....

.... Science, being the main topic of discussion in this class, should at one point include evolution, because that is what evolution is, a science. Although to truly understand evolution in its fullest context, one must not look to a dictionary, for dictionary definitions just are too vague. One of the most respected evolutionary biologists has defined biological evolution as follows: "In the broadest sense, evolution is merely change, and so is all-pervasive; galaxies, languages, and political systems all evolve. Biological evolution ... is change in the properties of populations of organisms that transcend the lifetime of a single individual. The ontogeny of .....

.... several other diseases is greater for individuals with sedentary life-styles than those who engage in a daily brisk walk of 30 to 60 minutes (Cufman, 1993). Moderate regular exercise, lasting say 15 to 30 minutes, five times a week also has been found to improve health. In fact, high levels of exercise increase the risk of injuries (Edlin p.130 ). If you exercise regularly, your overall risk of a heart attack is about 50 percent less than if you are inactive and out of shape. With routine exercise you can reach a level of physical fitness comparable to an active person ten to twenty years younger. Regular exercise may also lower your cholesterol and blood pre .....

.... the contaminants. That's where composting comes in. TNT, RDX, and HMX are complex organic compounds made up of carbon, nitrogen, oxygen, and hydrogen. When combined with more conventional compost ingredients such as manures, sawdust, straw, and fruit and vegetable processing wastes, the explosives become broken down into harmless chemical forms. The Army is using composting to clean up munitions processing wastes at several of its ammunition plants, including ones in Louisiana, Wisconsin, and Oregon. At the Oregon site, composting is projected to save 2.6 million dollars compared with incinerating the contaminated soils. In addition to saving money, composting .....