.... and orientation in the solid phase of it. Therefore the strength and modulus levels were far lower than theoretically possible values. In 1965, scientists at Du Pont discovered a new method of producing an almost perfect polymer chain extension. The polymer poly-p-benzamide was found to form liquid crystalline solutions due to the repetitiveness of its molecular backbone. The key for the structural requirement for the backbone is para orientation on the benzene ring, which allowed for rod-like molecular structures. This technology was used when Du Pont released aramid fiber in 1971. What is it? Kevlar is an aramid, a term invented as an abbreviation for aromat ....

.... Random House Dictionary of the English Language is "to divest or clear of forests or trees" and we must stop deforestation to save our planet. My intent on writing this essay is to enlighten the reader about the facts on deforestation and to express my opinions about deforestation. There are approximately 3 400 million hectares of forests in the world, nearly 25% of the world's land area. Close to 58% of the forests are found in the temperate/boreal regions and 42% in the tropics. For about a millennium, people have benefited from the forests. Forest products range from simple fuelwood and building poles to sophisticated natural medicines, and from high- tech wood based m ....

.... with autism show abnormalities in the structure of the brain. Significant abnormalities include differences in the cerebellum and in the size and number of Purkinje cells within the brain. Sometimes there is a pattern that exists within families from generation to generation. This indicates the possibility that autism is genetically related. However, no gene has been found. Every person with autism is different and there is no set type or typical person with autism. This is because autism is a spectrum disorder, meaning that symptoms and characteristics of the disorder can present themselves in a variety of ways, from mild to severe. Usually children with autism have d ....

.... sedges, mosses, lichens, short grasses; alpine and grass meadows. Los Angeles, California, placed on Mediterranean shrubland (MSh) terrestrial biome. Vegetation characteristic in this area is described as short shrub, drought adapted, tending to grassy woodlands chaparral. In Fargo, North Dakota, needleleaf forest and montane forest (NF/MF) makes vegetation in that area characterized as is needleleaf conifers, evergreen pine, spruce, fir, Russian larch and a deciduous needleleaf. Global Climate and Species Adaptations Nome, Alaska is located in ET/Dwd of Koppen climatic classification. Most of this area experiences permafrost condition. Temperature of the warmest month ....

.... plants, and its surface tension provides a comfortable habitat for many insects. Water is also one of the best solvents. The specific heat property of water stabilizes temperature in living organisms and its high heat of vaporization regulates earth's climate. One of the most unique things about water is the fact that it expands when it freezes unlike many other liquids. Its thermal and transparent properties protect aquatic life in freezing temperatures. All of these things combined help to sustain life and keep it constantly evolving. In the next couple of pages, we are going to go into detail of how it does this. Water consists of two hydrogen atoms that are joined to one ....

.... commercially or medically desirable properties. While the potential benefits of genetic engineering are considerable, so may be the potential dangers. For example, the introduction of cancer-causing genes into a common infectious organism, such as the influenza virus, could be hazardous. We have come to believe that all human beings are equal; but even more firmly, we are taught to believe each one of us is unique. Is that idea undercut by cloning? That is, if you can deliberately make any number of copies of an individual, is each one special? How special can clones feel, knowing they were replicated like smile buttons. "We aren't just our genes, we're a whole collec ....

.... water from water systems that fell short of SDWA standards.[1] Adding gravity to the situation, the Centers for Disease Control (CDC) and the EPA advised that people with weakened immune systems should consult with their doctors and consider boiling their drinking water to kill any cryptosporidium.[2] This is just the tip of the iceberg. Some scientists believe that for every outbreak reported in the United States, another ten may be occurring.[3] One such study found that as many as one in three gastrointestinal illnesses — often chalked up to "stomach flu" — are caused by drinking water contaminated with microorganisms.[4] Such microbial-related outbreaks say nothing ab ....

.... other species that live in the same range as them. These cats are of no harm to human life, most deaths that jaguars have had a part in were to protect themselves from being killed. Many jaguars just disappear from the pressures of being killed. While the animal is trying to change habitats they have died. The rain forests that the jaguars inhabit are being torn down to open up lumbering, farming, livestock raising, and other activities carried out by humans. Killing a jaguar is taking away a life that is doing no harm to the eco-system. A jaguars' way of living is much like that of a human, you don't see jaguars killing humans for their skin. III. Any endangered spe ....