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Search results 20541 - 20550 of 30573 matching essays
- 20541: Between The Forest and Greed
- ... it maybe what Meadows would like us to think, does not happen. With every industry, every aspect is carefully debated and analyzed for the short and long term outcomes. Any industry that capitalizes on earth's resources figuratively signs a pact with the earth. This pact bonds this industry to the earth and requires that any harvesting of resources is not done so with haste and waste. There is a symbiotic relationship between the two. For the industry to exist there must be a constant supply of the resource. Without a constant supply the industry dies. Now, many people believe that the logging industry's objective is to cut down all the trees that are currently standing. As horrific as this scenario may sound, it is far from the truth. Without trees to cut down there is no industry. The ... sided view it loses strength. It only leads to flaws and the eventual dismissal of the argument. In any debate one should look at the topic from the opposing side before approaching it from one's own. In every country, forests are considered a valuable resource. They provide us with wood to build homes and paper to communicate. With a constantly growing population, the need for homes becomes greater and ...
- 20542: Aluminium
- Aluminium The history of Aluminium use Aluminium is now one of the most widely used metals, but one of the hardest to refine due to it's reactivity with other elements. Even as late as the turn of the century, Aluminium was considered very valuable and in turn expensive, even more expensive than gold. In some cultures, when a function was held ... by wealthy people, only the most honored guests would be given Aluminium cutlery, the others had to make do with gold or silver cutlery. A Description of the Aluminium ore, including a list of it's contents Pure Aluminium oxide is known as alumina (Al2O3). This is found as corundum, a crystalline. Aluminium can also occur as cryolite (Na3AlF6). Traces of other metal oxides in Aluminium oxide tint it to make ... form stones (often precious) for example: chronium gives a red colour to rubies, and cobalt makes the blue in sapphires. How Aluminium deposits are formed Aluminium (like many other metals) is not found in it's pure form, but associated with other elements in rocks and minerals. An aluminosilicate such as felspar (KAlSi3O8) is the main constituent of many rocks such as granite, which is quartz and mica cemented together ...
- 20543: Acid Rain
- ... 20.5 million tons of nitrogen oxides to our atmosphere worldwide. When fossil fuels are ignited like oil and coal, they release carbon dioxide, a so-called greenhouse gas that traps heat within the earth's atmosphere which causes global warming that is taking place right now. Also, it releases sulfur dioxide, nitrogen oxide and various metals (mercury, aluminum) that are released into the atmosphere that reacts with other airborne chemicals (water vapor and sunlight) to produce sulfuric and nitric acid which later can be carried long distance from their source and be deposited as rain (acid rain) but acid doesn't just came from rain but also in the forms of snow, hail, fog, and mist. Forests are a complex ecosystems that involves trees, soil, water, the air, climate and other living organisms that support the ... resource. The countries hardest effected by acid rain is in the European countries, yet central Europe face a much greater threat since it has a large amount of forest area and about 8% of German's forest face the lethal effect of Waldsterben or forest death of acid rain. Acid rain kill about 50 million hectares of forest that have been damaged in Europe and in Central and Eastern Europe' ...
- 20544: Why We Have Seasons
- Why We Have Seasons Seasons are produced by the inclination of the earth's axis of rotation, with the yearly revolution around the sun. During the earth's yearly revolution around the sun, the northern and southern hemispheres alternate their incline towards and away from the sun. This unequal heating of the earth's surface causes the weather to change in approximately three-month periods. When the Northern Hemisphere is inclined toward the sun from about March 21st to September 23rd the earths surface is heated causing the ...
- 20545: Colonies 2
- ... and Europeans wanting complete freedom settled the middle colonies. The settlement of these lands was mainly started by William Penn. Penn, received land for the King for debts owed to his father. It was Penn’s goal to create a society in which all people were equal. There was no slavery in the Middle Colonies, unlike the Southern Colonies, and by law, all men could own land. Also, they respected the natives and even employed them from time to time. They remarked on how it wasn’t necessary to bare weapons around these people. Although the goal of these settlements was complete religious toleration, it wasn’t totally feasible. In addition, the colonies in the south were supported economically mainly be large plantations. The aristocratic class owned large plots of land in which they forced their workers to produce a cash ...
- 20546: Civil War 9
- ... Carolina was the first state to secede, and their main reason was that their powers were restrained by the federal government. They felt they were not sovereign, and therefore needed to secede. In the 1860’s, the nation continued to struggle to become united. Congress introduced the new banking and currency systems. Senator John Sherman commended this because he was a strong believer in national unity. He believed that everything should ... to trust him with a vote as safely as it trusted him with a bayonet." At this time they did not have full protection from the courts, nor did the courts receive a black person’s testimony. In 1865, the blacks did not receive homesteads promised to them by the government. They struggled for the right to purchase land. It seemed unfair to them that a person that was a former ... the Emancipation Proclamation. The Proclamation was a very important document in that it guaranteed the future freedom of all American slaves. Though the Proclomation was to have an important impact it initially failed and didn’t change the position of a single slave in the south. The south did not consider itself part of the Union and pushed them to fight even harder to protect their so-called “property”. Though ...
- 20547: Cloning
- ... of course. In reference to identical twins. Outside of that, no human has ever been artificially cloned. One attempt at splitting an embryo in 1993 came very close, but was not successful. Although humans haven't ever been cloned, several animals have, all in recent months. The more publicized cloning was of Dolly the sheep. The cloning that also occurred, but had much less television coverage was that of a monkey ... clone Dolly, it took 277 attempts before a success. Attempts to clone humans are also currently being cut short. A British ban on cloning, a ban on cloning currently in the works in the U.S., and a current ban on the use of federal money for then research of cloning humans all make it tough. In addition to that, both of the two ways of cloning, splitting an embryo, and ... try. With all of these possibilities, the social and economic repercussions need to be taken a look at and then a comprehensive decision by the scientific community needs to be reached. Bibliography Fincham, J. R. S., and Ravetz, J. R., Genetically Engineered Organisms (1991) Jackson, J. B., Population Biology and Evolution of Clonal Organisms (1986) Steinberg, M. L., and Cosloy, S., The Facts on File Dictionary of Biotechnology and Genetic ...
- 20548: David And Solomon
- ... Many of his problems originated from his Temple, a stucture that was conceptualized by his father to be a deterrent against the paganism, which infested the land. Yet, it seemed as if several of Solomon’s policies actually encouraged paganism rather than deter it. King David, a member of the tribe of Judah was chosen by God to lead his people. As everyone knows, he proved by his wise choices to ... be a less effective leader than his father. Some of his decisions proved to be unwise and weakened the stability of Israel for along time to come. Much of the trouble which occurred in Solomon’s reign was directly related to his Temple. First of all, his need to showcase the power and wealth of Jerusalem required the construction of lavish palaces and other structures, such as the Temple. The income ... raise supplemental income. Other indications that his empire was weakening was the successful rebellions of Edom and Aram against Israelite rule. Furthermore, the progressively weakening state of affairs allowed Jeroboam to break away from Solomon’s rule. He was able to attain leadership over Solomon’s opponents- those that were frustrated with his policies of severe taxation and forced labor. Concerning the actual Temple, one must be reminded that King ...
- 20549: The Effect of Concentrations of Starch and Sugar Solutions on Synthetic Semi-Permeable Membranes
- ... Gatorade will exit the dialysis and into the water. So the dialysis is semi-permeable. Materials: 16 cm dialysis tubing beaker cylinder test tubes transfer pipettes Gatorade Starch solution 10 g/1000 ml water Benedict's Solution Iodine Solution string ring stand water bath boiling chips goggles Scientific Method: 1. Each group will make up a Gatorade solution as follows: Group 1 1.0 M 3.4 g/10 ml Group ... height of the water in the transfer pipette was that it did not change. Observations and Data: Tests: Positive Negative Test for starch and Iodine Solution blue black clear yellow Test for Gatorade and Benedict's Solution orange/green clear blue 17. Using transfer pipettes and dry test tubes, test the solution that has been holding the tubing for Gatorade and starch. Test each separately. Run a control for each. Test each of the original solutions with Benedict's and Iodine solutions. 18. Record Observations: When starch is added to Iodine Solution it turns clear yellow and when Gatorade and Benedict's Solution are mixed it turns orange. The Gatorade solution smells like ...
- 20550: Rates of Reaction
- ... symbol Mg, silvery white metallic element that is relatively unreactive. In group 2 (or IIa) of the periodic table, magnesium is one of the alkaline earth metals. The atomic number of magnesium is 12. Magnesium(s) + Hydrochloric acid(aq) = Magnesium Chloride(aq) + Hydrogen(g) Mg + 2HCl = MgCl2 + H2 In the reaction when the magnesium hits the acid when dropped in, it fisses and then disappears giving of hydrogen as it fisses ... of reaction increases, but it does not explain by how much or by how fast the rate increases. The Kinetic energy of a particle is proportional to its absolute (Kelvin) temperature. 1/2 mv 2µ T But the mass of the particles remains constant so we can eliminate that part of the equation so; Ţ V2µT Therefore we can fit this into a formula: V21/V22 = T1/T2 If we substitute ... particles. From these equations the fractions of particles with an energy > EA J mole-1 is represented by the equation: e -Ea/RT where R= the gas constant (8.3 J K-1 mole -1) T= absolute temperature. This suggests that at a given temperature, T, The reaction rate µ e -Ea/RT If we use k as the rate constant, as a measure of the reaction rate we can ...
Search results 20541 - 20550 of 30573 matching essays
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