Barium
.... its uses is as a getter in vacuum tubes. Barium’s sulfate is used in paint and in glassmaking. Barite is extensively used as a weighing agent in oilwell drilling fluids. The carbonate has been used as a rat poison, while barium nitrate and barium chlorate give colors in pyrotechny. The impure sulfide of barium radiantly glows after exposure to the light. Barium metal has few practical applications, although it is sometimes used in coating electrical conductors in electronic apparatus and in automobile .....
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Global Warming
.... and stop destroying, the forests, the world could become hotter than it has been in the past million years. Average global temperatures have risen 1 degree Fahrenheit over the last century. If carbon dioxide and other greenhouse gases continue to spill into the atmosphere, global temperatures could rise five to 10 degrees by the middle of the next century.
The warning will be the greatest at the higher latitudes of the Northern Hemisphere, with the largest temperature rises occurring in winter. Most .....
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Observed Distribution Of South American Relief Features
.... cycle, called a convection cell, drives the plate in the direction of the cell. How does a ‘solid’ mantle move? The mantle may be solid but, as with most solids, it will deform if long-term stress is applied. Presently, there are more than fourteen plates in the Earth’s crust. Upwelling hot magma flows out from mid-ocean ridges and then cools down when exposed to the cooled environment outside; the layer of cooled magma forms the lithosphere. When magma flows out from the ridges, the crust is fractured .....
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Titanium
.... When natural, titanium is reported to become very radioactive after being bombarded with neutrons. The emitted radiations are mostly positrons and gamma rays. The hexagonal alpha form changes to the cubic beta form very slowly at around 880 degrees Celsius. The metal combines with oxygen at red heat, and with chorine at 550 degrees Celsius. Titanium when a metal, is considered to be physiologically inert. Pure titanium dioxide is kind of clear and has an extremely high index of refraction with an opt .....
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El Nino
.... in the primary life forms that form the beginning of the food chain. The warmer waters that are brought by these changing cycles hold less dissolved oxygen forcing fish to go deeper or venture elsewhere. Due to a lack of data during El Nino occurrences it is not fully known if fish populations are depleted solely due to exposure to El Nino. A decrease in their growth and reproductive success has been observed by many surveys in coastal waters.
The link between climatic effects around the wor .....
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Cellular Respiration
.... reactions, each pyruvic acid molecule is transformed into a two-carbon compound called an acetyl group. The two acetyl groups combine with a molecule of coenzyme A each to form two acetyl coenzyme A molecules. These molecules are processed in a complex pathway called the Krebs cycle. As the Krebs cycle progresses through both pyruvic acid molecules, six molecules of NADH, two molecules of ATP, and additional carbon dioxide are all formed. FAD picks up a hydrogen atom from each pyruvic acid molecule, .....
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Pollution From Livestock And Manure
.... to spread it every or every other
day. That is the worst because when you put it on snow and the snow melts it runs into a river or
goes down to the ground water and pollutes it.
The best way of handling of manure is to build a
six month pit or harvester. That means that you can hold your livestock manure and all the runoff
that is run into it for six months or more. To build a pit you must have a overview map that
shows;
"1. Farm buildings, yards surrounding area, homes, other
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Types Of Land Features
.... up to 3-5 feet in diameter and 80-100 feet tall.
Animal life is abundant. There are fewer large animals but an absorbent amount of smaller animals. Animals such as raccoons, skunks, foxes, voles, and mice are very common in the deciduous forests. Amphibians are just as common such as frogs, toads, and salamanders.
Threats to this biome are happening more frequently. Acid rain and air pollution is threatening plants and animals. Deer population has become a bigger threat over the last .....
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Satellites
.... after World War II that by 1954 the possibility of launching a satellite was no longer in serious doubt. In October 1954 the Committee for the International Geophysical Year (IGY), announced to other countries that they were considering launching small satellite vehicles for space exploration. In April and again in July 1955 the USSR and the U.S. announced plans to launch satellites for the IGY. The USSR launched SPUTNIK 1 on Oct. 4, 1957, and the United States launched EXPLORER 1 on Jan. 31, 1958. Th .....
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Air Pollution
.... to increase as a result of the increased number of motor vehicles. Exhaust fumes from the engines of automobiles contain a number of polluting substances, including carbon monoxide and a variety of complex hydrocarbons, nitrogen oxides, and other compounds. When acted upon by sunlight, these substances undergo a change in composition producing the brown, photochemical smog for which Los Angeles is well known. Efforts to reduce pollution from automobile engines and to develop pollution-free engines may .....
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Water And Its Importance
.... 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 oxygen atom by covalent bonds. These bonds are polar bonds. The partial charges on different parts of water .....
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Global Warming
.... as a serious global-scale environmental threat. The overwhelming majority of scientific experts believe human-induced climate change is inevitable. The question is not whether climate will change in response to human activities, but rather where (regional pattern), when (the rate of change) and by how much (magnitude). (17,18).
Alarming information and trends are leading the scientific community in this same belief. The concept of global warming is predicting detrimental events for the future.
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The Noble Gases
.... The element is found most common in the atmosphere of the earth. It is also found in the earth’s crust. Sir Walter Ramsey and Morris W. Travers discovered it in 1898. Its uses include electric signs, lamps, and lasers.
Argon is the most abundant and most used noble on earth. Sir Walter Ramsey discovered it by Lord Rayleigh and in 1894. Argon makes up about 1.2 % of the earths atmosphere. It is found naturally in rock and in the air. It is used for electric light bulbs and fluorescent tubes. It is a .....
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Magnesium, Beryllium, And Calcium
.... have been many uses for calcium over the years, but calcium has not been available on a large scale until the twentieth century. Calcium is a metallic element, which is fifth in abundance in the Earth’s crust. It is essential for forming leaves, bones, shells, and Portland Cement. Calcium occurs in many highly useful compounds such as marble, limestone, and chalk.
Plants and animals must have calcium to live. A plant cannot grow without a good supply of calcium. A lack of calcium prevents bones .....
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Coelacanths
.... coelacanth. Finally, off the Comero Islands, north of Madagascar, they met with success. Since then, more than 200 specimens have been found, all in the same region.
Apart from the novelty of being such rare fish, coelacanths have very great zoological importance. First, they are "living fossils"-a life form that has been preserved almost unchanged for many millions of years. As such, they offer the scientist a view of the biology of an earlier stage in the history of life. Second, the group .....
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