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Dry Season Central America
1,976 words... owed on old, large diameter trees. Leaves are pinnately compound, alternate in arrangement and 20 to 30 cm in length. Leaflets are generally opposite in arrangement, oblong in shape and pointed at the tip. On some specimens leaflets may be elliptical with rounded tips. There are 7 to 25 leaflets per leaf and size increases towards the tip. Leaflets are 40 to 80 mm long and 20 to 40 mm wide (Lavin 1996). Flower development corresponds to the beginning of the dry season when trees have most th...
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Clean Air Act Acid Rain
1,807 wordsAcidic deposition, or acid rain as it is commonly known, occurs when emissions of sulfur dioxide (SO 2) and oxides of nitrogen (NOx) react in the atmosphere with water, oxygen, and oxidants to form various acidic compounds. These compounds then fall to the earth in either dry form (such as gas and particles) or wet form (such as rain, snow, and fog). Prevailing winds transport the compounds, sometimes hundreds of miles, across state and national borders. Electric utility plants account for about...
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Liquid Nitrogen Surface Area
1,858 wordsIntroduction Background and Theory. Experimental Procedure. Results and Discussion Conclusions and Recommendations Nomenclature... References B. Equipment Diagram... The hydrogenolysis of ethane on a nickel on kieselguhr catalyst has only been conducted using a cylindrical pellet shaped catalyst of unknown surface area. We used a powdered version of this catalyst and compared its performance with that of the pellet catalyst. This comparison was conducted using one gram of catalyst in each reacto...
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Declining Clarity Of A Jewell Exploring Lake Tahoe
2,172 wordsFigure One -- Tahoe Region Map Page 3 A Lake Clarity -- Introduction to Causes Page 5 Figure Two -- Sec Depth Chart Page 6 A Figure Three -- Population Graph Page 7 A Water Inflow and Algae Growth Page 9 Figure Four -- Water Cycle Flow Chart Page 10 A Maps and Graphs -- References Page 17 Lake Tahoe is the pristine jewel of the West Coast, known around the world for its beauty. The Lake Tahoe area was even in the spotlight for the winter Olympic Games at Squaw Valley in 60 's. Over the decades w...
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Effects Of Acid Rain Sulfur Dioxide And Nitrogen
3,730 wordsWhat is acid rain? Acid rain is the term for pollution caused when sulfur and nitrogen dioxides combine with atmospheric moisture. The term 'acid rain' is slightly misleading, and would be more accurate if deemed 'enhanced acid rain', as rain occurs acidic naturally. Acidity is measured on what is know as the pH scale. Fourteen is the most basic, seven is the most neutral, and zero is the most acidic. Pure rain has a pH level of 7, which is exactly neutral. The acidity of rain is determined by t...
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Scuba Diving Psychological Stress
1,084 words... they do not recognize the symptoms of stress before they culminate into full blown panic ("High Anxiety"). Stress comes in two major forms one being physical stress and the other psychological stress. Physical stress isn't a tough one to detect, it is simply when you are exerting yourself at a higher level, when you are in harsh conditions such as being in cold water, being sick, or any number of things that affect you physically. Psychological stress on the other hand is not so easy to dete...
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Catalytic Converter Carbon Monoxide
705 wordsIntroduction There are millions of cars on the road in the United States, and each one is a source of air pollution. Especially in large cities, the amount of pollution cars produce everyday is a lot. To solve those problems, many laws have been enacted restricting the amount of pollution that cars can produce. To make their cars as pollution-free as possible, automakers have made many refinements to car engines and fuel systems and have developed the catalytic converter. The catalytic converter...
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2 H 2 O Carbon Monoxide
1,607 words1. State the five assumptions of the Kinetic-Molecular Theory of gases. a) Gases consist of large numbers of tiny particles. These particles, usually molecules or atoms, typically occupy a volume about 1000 times larger than occupied by the same number of particles in the liquid or solid state. Thus molecules of gases are much further apart than those of liquids or solids. Most of the volume occupied by a gas is empty space. This accounts for the lower density of gases compared to liquids and so...
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U S Government Sulfur Dioxide And Nitrogen
1,198 words... few examples of how wide spread the acid rain problem is on just man made structures. Effects on Humans When acid rain falls on humans it has really no adverse effect on the outside, humans can even swim in acidic lakes and its doesnt harm them. The serious effects start to take place on the inside of the body and that is respiratory problems. When sulfur dioxide and nitrogen oxide emissions gives risk to respiratory problems such as dry coughs, asthma, headaches, eye, nose, and throat irrit...
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Organic Compounds Soil Particles
1,280 wordsH 2 > Introduction to Septic Systems The septic system is a grouping of components working together to decompose household waste water. The septic tank holds the waste and breaks the organic compounds into a solid, liquid or gas. The solid waste (called sludge) settles to the bottom of the tank and must periodically be removed. The liquid waste is flushed to the distribution box and is then allowed to drain into the ground through a series of perforated pipes (often called lines or a leac...
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2 O 2 Bodies Of Water
1,333 wordsAcid rain pollution comes in various forms. Whether its toxic waste, CFCs, or sewage, they are all hazardous to the earth. These can deplete the earth and its inhabitants of resources, causing a harmful change. A product of pollution is acid rain. We shall see that acidification is harmful to all forms of life. Acid rain is any form of precipitation that is polluted by sulphur dioxide (SO 2), and nitrogen oxides (NOX). This acid precipitation can be in the form of rain, snow, sleet, fog, or clou...
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Clean Air Act H 2 O
1,801 wordsAcid rain is exactly what it suggests- rain that is acidic. The definition of 'acid rain' is rain with a pH of below 5. 6. Rain becomes acidic because of gases that dissolve in the rain. Approximately 70 % of acid rain is a result of dissolved sulfur dioxide (SO 2) which forms Sulfuric Acid. The remaining 30 % or so comes from various Nitrogen Oxides (mostly NO 2 and NO 3 which has collectedly adopted the mane Nox). There is also a small percentage of hydrochloric acid that makes up hydrochloric...
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Nitrogen Dioxide Sulfur Dioxide
1,372 wordsCatalysts &# 038; Fine Particle In Industry Catalyst: Catalysis, alteration of the speed of a chemical reaction, through the presence of an additional substance, known as a catalyst, that remains chemically unchanged by the reaction. Enzymes, which are among the most powerful catalysts, play an essential role in living organisms, where they accelerate reactions that otherwise would require temperatures that would destroy most of the organic matter. A catalyst in a solution with-or in the same ph...
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Carbon Monoxide Carbon Dioxide
4,029 wordsThe Exhaust Systems Exhaust Systems The exhaust system on a car is the most important device to keep our environment clean. Many exhaust emissions from the engine such as water, oxygen, nitrogen, and carbon dioxide, are of little concern. Others, such as hydrocarbons (HC), oxides of nitrogen (NO), and carbon monoxide (CO), can cause environmental and health problems if not controlled. Hydrocarbon emissions react with sunlight, which cause photochemical smog. The exhaust system controls these the...
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Liquid Nitrogen Degrees F
890 wordsSince the beginning of time people have been trying new ideas for keeping things like food cold. Up until the early 20 th century ice was the best method for cooling perishable items, button we figured out a more efficient and affective way of keeping items cold. It was called the refrigerator. Soon after the introduction of the refrigerator we developed something called cryogenic freeing, which is freezing with very low temperatures. Cryogenic freezing is the study mater that is colder than tem...
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Sri Lanka Dry Season
4,091 wordsContent Gliricidia Septum GLIRICIDIA SEPIU Content History Introduction and Description Common Names Chemical Compounds Toxicity Uses and Efficacy History Gliricidias was first used in Mexico to provide shade for cacao plantations. It is from this use that the Aztecs labeled the tree Madre de Cacao (Mother of cacao). Later, in the 18 th Century, Gliricidias was brought to Sri Lanka to provide shade for coffee plantations. Today, the trees long leafy branches are used to shade vanilla and tea cro...
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Nitrogen Fixation Atmospheric Nitrogen Bacteria
770 wordsa) Production of food: cheese, yogurt, vinegar, wine, sour cream, etc. b) Industry: cleaning up petroleum, remove waste products from the water, synthesize drugs and chemicals. Symbiosis: The interdependence of different species, which are sometimes called symbiont's. There are three main types of symbiosis, based upon the specific relationship between the species involved: mutualism, parasitism, and commensalism. Symbiosis that results in mutual benefit to the interdependent organisms is common...
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Carbon Dioxide Liquid Nitrogen
2,011 wordsPURPOSE: In this particular laboratory experiment, we are going to determine the molar mass of an unknown gas, from the gas density. We are also going to use gas density, along with the kinetic molecular theory, to explain the behavior of gas filled balloons. Finally, we are going to demonstrate the effects of temperature and pressure changes of gasses. PROCEDURE: We are using the experimental procedure as described in our laboratory manual. University of Wisconsin River Falls Laboratory Manual ...
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Nitrogen Oxides Nitrogen Dioxide
1,745 wordsGifted Photochemical Smog Photochemical Smog Gifted Chemistry IB Alternative Assessment 1997 March 19 Historically, the term smog referred to a mixture of smoke and fog, hence the name smog. The industrial revolution has been the central cause for the increase in pollutants in the atmosphere over the last three centuries. Before 1950, the majority of this pollution was created from the burning of coal for energy generation, space heating, cooking, and transportation. Under the right conditions, ...
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Clean Air Act Effects Of Acid Rain
2,231 wordsAcid Rain is a serious problem with disastrous effects. Every day this problem increases. Many believe that this issue is too small to deal with, but if the acid rain problem is not met with head on, the effects on people, plants, animals, and the economy will only worsen. In the following paragraphs you will learn what acid rain is, the effects it has on human life, animals, the economy, the economic costs, and what is being done to help to stop this problem. This topic is very important becaus...
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