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Essays on Science

Download This PaperWords: 568 - Pages: 3

... as handles. has a dense atmosphere mad up of 88% hydrogen, 11% helium and the remainder comprises traces of methane, ammonia, ammonia crystals , and such other gases as ethane acetylene, and phosphine. has an average temperature of negative one hundred and seventy six degrees Celsius below zero. On the surface of planet winds can reach up to nine hundred mile per second. also has a jet stream. 's magnetosphere consuts of a set of doughnut-shaped radiation belts in which electrons and atomic nuclei are trapped. The belts extend more than two million kilometers from the center of and even farther in the direction away from the sun, although the size of the magnet ...

Deciduous Forests
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... type once covered large portions of Eurasia, South America, and North America. As with most native forests, they have been cleared so that the land could be used for farming or residential use. The temperate deciduous forests of North America were more diverse than the same type of forests in Europe due to glacial history. Glacial action dumped till as the ice edge retreated, and North America inherited a fertile soil base. Soil type is an important factor for which species of trees can thrive in an area. The general dominant tree species for temperate deciduous forests are Beech, Ash, Oak, and in our region also Tulip, Maple, Birch, and Hickory. Developed forests ...

Muscles In The Human Body
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... first is skeletal. Skeletal muscle makes up the largest mass of muscle in the body, and is the type of muscle that is attached to bones and moves the skeleton in a conscious control, so therefore it is a voluntary muscle. Its contractions are short and strong, providing the force needed for movement. The muscle contractions produce and provide some heat needed in the body. Skeletal muscle tissue is made up of smaller fibers called myofibrils. These myofibrils are composed of even smaller protein filaments. These filaments can be either thick or thin. The thick filaments are made of the protein myosin, and the thin filaments are made of the protein actin. The arr ...

Becoming An Ecologist Is An Exciting Venture
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... said that,". . . the ecologist is the one that brings together the study of all natural systems- earth, air, water, plants, and animals. Connections between living organisms and effects of their interactions are ecologists' concerns. . . . .The balance of nature, wherever it occurs, is what you will investigate and analyze"(17). Since a career as an ecologist is usually long term, there are certain characteristics a person should have in order to maintain a successful career. One of these characteristics that is the most important is patience. Patience is important because as an ecologist a person will have to at some point in their career talk to another person ...

An Agricultural Movement
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... ways to boost agricultural output and still save the environment. The U.S. could have been using biotechnology as early as the late 1800's. USDA entomologist C.V. Riley was quoted in an article written by Sean Adams for Agricultural Research. Adams uses Riley’s quote from 1882 saying that the evidence for the use of natural enemies and parasites to control pests is sufficient to support their use. (16). Even so, pesticides have been used for centuries. In James Whorton’s book, Before Silent Spring, he describes agriculture before the Industrial Revolution. He writes that farmers in the 1800's used arsenic and sulphur to stop insects and molds from harming ...

An End To Genetic Diseases
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... was not understood at the time. "Sixteen years after his death, three people believed to have the key. Looking for other results to verify the ideas, they came across Mendel's results" (14). Their data agreed, and with this a new science was born - the science of Genetics (15). Due to modern medicine, such as antibiotics and rehabilitation, many genetic diseases have been allowed to survive. In nature, these diseases would not have survived to the extent that they do now. Advances in science and medicine have allowed these problems to thrive. Further advances in science may be able to terminate genetic diseases through cloning. Genetic problems have p ...

International Space Station
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... idea of having an operable, livable, space station seemed to be inconceivable to everyone who heard that speech. As the ideas for this project began to take off, the main concern was money. How much funding would be necessary to construct a space station? At first, NASA could only work within the agency’s estimated $8.5 billion dollar budget. It was in 1984 when the first construction plan was unveiled, called “Freedom.” A “power tower” concept was designed, which is a long slender unit that would be the center of the entire structure. This tower would be a long, narrow piece of latticework, chosen for its stability and to avoid ...

The Beaver
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... the neck thick, the hind feet webbed, and all the digits clawed. The fur is usually reddish-brown above and lighter or grayish below. The eyes are small and the nostrils closable. The skull is massive, with marked ridges for fixing the muscles that work the jaws. The two front teeth on either jaw are like those of other rodents, wearing away more rapidly behind so as to leave a sharp, enameled chisel edge. With these can cut down large trees. It usually selects trees 5 to 20 cm (2 to 8 in) in diameter, but it can fell trees with diameters as large as 76 cm (30 in). Beavers have a pair of anal scent glands, called castors, that secrete a musklike substance ca ...

Sedimentary Rocks
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... precipitation from solution. These two categories are not exclusive because most clastic carry some chemical sediment, and most chemical also contain some loose sediment material. All are in general characterized by the parallel arrangement of their mineral layers or beds, which are distinguished from each other by differences in thickness, the size of the grains, or color. All rock disintegrate slowly as a result of mechanical weathering and chemical weathering. Mechanical weathering is the breakdown of rock into particles without producing changes in the chemical composition of the minerals in the rock. Ice is the most important agent of mechanical weatherin ...

Genetic Engineering
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... saw the recent New Yorker article on the subject [Richard Preston, "Annals of Warfare: the Bioweaponeers." New Yorker, March, 1998]. There is widespread consensus that the information reported in that article is true. One of the things he mentions is that the former Soviet Union had the largest big-warfare program in the world, with 32,000 scientists working on it. Much of it had to do with genetic engineering. In one of the projects they took smallpox, which has otherwise disappeared from the world, and found a way to genetically introduce into it, without reducing its efficacy as smallpox, either Ebola virus or equine encephalitis viruses. Nobody seems to ...

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