reproduction. 2. How do oceanographers know where to look for/have a good chance of finding hydrothermal vent communities given the vastness of the ocean? Why? According to the link‚ the water temperature of hydrothermal vents is much warmer than normal for
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Hydrothermal Vents and its Organisms! A hydrothermal vent is a fissure in a planet’s surface from which geothermally heated water issues. Hydrothermal vents are commonly found near volcanically active places‚ areas where tectonic plates are moving apart‚ ocean basins‚ an hotspots Hydrothermal vents exist because the earth is both geologically active and has large amounts of water on its surface and within its crust. Common land types include hot springs‚ fumaroles and geysers. Under the sea
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Hydrothermal Vents In 1977‚ Robert Ballard and J.F. Grassle of the Woods Hole Oceanographic Instution‚ were diving in Alvin near the Galapagos Islands when they discovered rocky chimneys up to 20 meters high. These chimneys were emitting dark‚ mineral-laden water that reached temperatures of 350 degrees Celsius. The occupants of Alvin had discovered the first documented hydrothermal vent. These vents are formally defined as "springs of hot‚ mineral- and gas-rich seawater found on some oceanic
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The Lost City Hydrothermal Field Revisited Characteristics of Lost City never before seen in the marine environment venting temperatures around 40-91 degrees Celsius metal-poor hydrothermal fluids with high concentratons of dissolved hydrogen‚ methane‚ and other low molecular weight hydrocarbons all driven by reactions in the underlying basement of the ocean at temperatures of around 200 degrees Celsius; happening for more than 40‚000 years Fauna and living species Microbiological communities
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Hydrothermal Liquefaction: This process is first of its kind which is developed in Denmark by 2 Danish universities Aalborg University and Aarhus University according to this process HTL all the crude bio-oil produced is sufficiently similar to the fossil crude oil. The HTL process only consumes approximately 10-15 percent of the energy in the feedstock biomass‚ yielding an energy efficiency of 85-90 percent. To emphasize‚ the HTL process accepts all biomasses from modern society – sewage sludge
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Smokers versus Non Smokers In the past when you walked into a bar‚ a restaurant or even any public place a lot of times all you could smell was the lingering pastime of a stale cigarette. But now society has come to realize that even that second-hand smoke can be a silent killer. Cigarettes contain over 4‚800 chemicals‚ 69 of which is known to cause cancer. Most lung cancer and lung diseases are linked back to the terrible addition of becoming a smoker or being around someone who so kindly shared
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Rolando Valdes April 15‚ 2013 EAP 1540 Cause and effect Essay Smoke Do you know how many smokers get sick in U.S.A. every year? More than 2.0 million people are diagnose with different diseases due to the smoking habit. Smoking harms nearly every organ in the body‚ including heart‚ blood vessels‚ lungs‚ eyes‚ mouth‚ bones and digestive organs. In this essay we’ll focus in heart and lung diseases. The chemicals in tobacco damage your blood cells. Also‚ they damage the function of heart. This
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against smokers is equivalent to now illegal racial and gender discrimination years ago. This is because‚ smoking has got nothing to do with the society’s perception towards smokers. Smoking is being accepted as a social norm by many individuals. Media has been portraying smokers and smoking as a cool and normal thing to be done. Although few individuals in the society has been fighting against smokers‚ but if we the majority society‚ don’t really have an issue about smokers. Moreover‚ smokers also
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Smokers and the tax The fallacy in the proposed higher tax on cigarettes is the belief that the number of smokers will be reduced if the price of the smoke goes up beyond their reach. This may well be true if there were no cheaper and better-tasting substitutes which are taxed. However‚ there are a lot of reasons for smokers should pay a health tax. First‚ smoking is unhealthy. Therefore‚ people should care about themselves and think about other people around them. Smoking cause a lot of diseases
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exhaled by a smoker. The smoke that burns off the end of a cigarette or cigar actually contains more harmful substances than the smoke inhaled by the smoker. This means that people who don’t smoke but are regularly around those who smoke are exposed to the health risks of cigarette smoking. How does second-hand smoke affect non-smokers? Even if you don’t smoke but are exposed to second-hand smoke on a regular basis‚ your body will absorb nicotine and other harmful substances just as smokers’ bodies
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