... formation - Volcanic activity - Destruction by man New Species A good example of allopatric speciation is the differences between the common giraffe (Giraffa camelopardalis), and the reticulated giraffe (Giraffa cameloparadalis reticula). These two subspecies have formed on different sides of the Tana River in Kenya. They are phenotypically distinct, and can only produce fertile offspring in zoos. Sympatric speciation occurs when two segments of the same species occupy a geographical area without interbreeding. Each new species, or subspecies, adapt to a specific environmental niche (adaptive radiation). Two segments of the same species Adapted ...
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... Major depression often lasts for months. Left untreated, it tends to reoccur. Each reoccurrence tends to last longer and is more debilitating than the one before. Chronic depression is a low grade, long-term depression that can go on for years. Some people have had it most of their lives. Long term, low-grade depression is also known as dysthymia. Dys, meaning disorder, and thymia meaning mood. Dysthmia is then a disorder of ones mood. The last type is manic depression. The lows of this depression can alter with days or weeks of maniaextreme feelings, unreasonable thoughts, and inappropriate, sometimes destructive behavior. The manic-depressive person flu ...
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... and lignite. Anthracite has the highest carbon content, anywhere from 86 to 98 percent. And produces nearly 15,000 Btu's per pound (British Thermal Unit, is the amount of heat needed to raise the temperature of the pound of water one degree Fahrenheit) (Bartow 1) The second type of coal is Bituminous or soft coal. It's the most plentiful type of coal in the States, and is mainly found in the eastern and middle part of the North American continent. Bituminous coal is primary used to generate electricity, and has a carbon content of 45 to 86 percent and a heat value of 10,500 to 15,000 Btu's. Sub-bituminous coal rank just below bituminous coal with 35 to 45 percen ...
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... can send them thousands of kilometers from the source. When the acids fall on to the earth in any way or form it will have a large impact on the growth or the preservation of certain wildlife. Areas in Ontario mainly southern regions that are near the Great Lakes, such substances as limestone or other known antacids can neutralize acids entering the body of water thereby protecting it. However, large areas of Ontario that are near the Pre-Cambrian Shield, with quartzite or granite based geology and little top soil, there is not enough buffering capacity to neutralize even small amounts of acid falling on the soil and the lakes. Therefore over time, the basi ...
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... more energy-using devices, the temperation to exploit land for human use without regard for consequences is great. Frequently, several forms of environmental change are responsible for the disappearance of species. For example, as tropical forests are cut down, primates have progressively smaller feeding and living spaces. They also become more accessible to hunters, who kill monkeys for food and trap many primates for sale as pets, research animals, and zoo specimens. Some animal species may move into human communities when their own are destroyed. Extermination of marauding monkeys, roaming tigers, or foraging deer is easy to justify by people whose livelihoo ...
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... offshore, separated from land by lagoons more than ten meters deep. Atolls, on the other hand, are formed far offshore and they make a ring-shaped reef that close a circular lagoon. Coral reefs are the largest biological structures on the planet, with the largest being the Great Barrier Reef covering over 2000 kilometers along the East Coast of Australia. The reef is said to be 500,000 to 2,500,000 years old and is said to be visible from the moon. There is only one problem with this beautiful structure and that is the carelessness of man. Silt from deforested lands and pollution from crowded coastlines choke them, and overuse by coal miners, fisheries, and even ...
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... of heat and electricity, it also reflects heat and light very well. Aluminum is fond in many Rocks and minerals on the earth's crust. Because aluminum is not very strong and is highly reactivate with Oxygen, water, acids, and bases it is compounded with other metals and elements to from alloys for common uses. In Society Aluminum Alloys are used in many ways because of it's light weight and versatility. As more and more ways are discovered to strengthened Aluminum with other elements more uses have also been discovered Aluminum is used in aircrafts, Electrical Engineering, Windows, doors, buildings, packaging and many other things. When aluminum is compo ...
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... known for his development of the periodic law of the properties of the chemical elements (which states that elements show a regular pattern ("periodicity") when they are arranged according to their atomic masses), published his first attempt to classify the known elements. His name was Mendeleyev, and he was a renowned teacher. Because no good textbook in chemistry was available at the time, he wrote the two-volume Principles of Chemistry (1868-1870), which later became a classic. During the writing of this book, Mendeleyev tried to classify the elements according to their chemical properties. In 1871 he published an improved version of the periodic table, in which ...
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... can also be found in such things as tissue found beneath the fingernails of a victim after a struggle, it can even be found in saliva cells left on a mouthpiece of a telephone after a conversation. DNA is everywhere in a persons body, and can not be replicated. It is unique to every person, but all blood relatives have similar qualities that make them identifiable. (Joe Mickel and John F. Fischer, 1998) DNA stands for deoxyribonucleic acid, and it basically looks like a twisted ladder, or a double helix with rungs or base pairs. Guanine (G), Adenine (A), Thymine (T), and Cytosine (C) are the four bases that make up the base pairs. The bases don't just pair w ...
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... are now. Evolutionists believe that evolution has created many organisms spread across the globe, some of which have become extinct and some of which are the plants and animals which live today. The theory that groups of organisms can be transformed into different organisms has been suggested many times since the early 1800s, when scientists began looking for evidence that the evolution process took place. "The most outstanding evolutionists in the nineteenth century was Jean Baptist de Lamarck, who argued that the patterns of resemblance arose through modifications of a common lineage-for example , that lions tigers and others all descendant from a cat like ance ...
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