Effects of Water Pollutions Water is important for the existence of life on earth. All organisms require it and aquatic plants and animals live their life in water. Water pollution occurs when you have toxins and pathogens present in water in dangerous amounts than permissible. One of the worst forms of pollution in the ecosystem is water pollution. When you hold a glass of water it may appear to be clean and clear. But the fact is there are millions of microscopic pollutants suspended
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11-12 13-14 15.16 3. Do you or any one of your school mates use indecent language during school hours? Yes No 4. Are you associated with any violent or inappropriate behaviour with any other students in the school that you attend? Yes No 5. Do you or any one of your school mates consume alcoholic beverages in school? Yes No 6. Do you or anyone of your school mates consume
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line between religion and philosophy‚ and to most people‚ this is still a debatable subject. First let’s define religion and philosophy. “Religion: The belief in and worship of a superhuman controlling power‚ esp. a personal God or gods.” “Philosophy: The study of the fundamental nature of knowledge‚ reality‚ and existence‚ esp. when considered as an academic discipline” (Wikipedia). These are quite different‚ and at first glance‚ it’s quite a no brainer that Buddhism is more of philosophy. Although
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released‚ the balloon will fly throung the air due to the unbalanced force making up action and reaction pairs of forced. ● These unbalanced forces‚ the gas is pusesh out of the balloon and the balloon is pushed toward. ● One not exist without the other. Inflated Balloon Some example of third law of motion ● ● When we walk on the ground‚ then our foot pushes the ground backward (action force) and the ground in turn exerts a force on the foot (reaction force) pushing the foot forward When
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Question: How do the enthalpies of combustion change as the alcohol molecules become larger? Prediction: I predict the bigger the molecule the more the energy will be released. Materials: On lab sheet Procedure: On lab sheet Observation: On other page Analysis: b) i) Ethanol – q=(100g)(4.18J/g/C)(25.5C) q=10659J Propanol – q=(100g)(4.18J/g/C)(21.5C) q=8987J Butanol – q=(100g)(4.18J/g/C)(23.5C) q=9823J ii) Ethanol – 10659J/0.985g= 10.8kJ/g Propanol – 8987J/0.845g= 10.6kJ/g Butanol
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Comments on the article: Science and football: a review of applied research in the football codes Written by Thomas Reilly and David Gilbourne of Research Institute for Sport and Exercise Sciences‚ Liverpool John Moores University‚ UK This article reviews various scientific researches being carried out all over the world to better understand the football codes and improve them. Over the last two decades there has been a growth in research directly related to football. Although most of this
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CHAPTER 22 THE ATMOSPHERE‚ CLIMATE‚ AND GLOBAL WARMING _______________________________________________ MULTIPLE CHOICE QUESTIONS 1) _____ Long-term weather trends associated with a particular setting or location‚ for example arid conditions downwind of a large mountain range Answer: e 2) _____ Study of the global-scale connections between atmosphere‚ oceans‚ biosphere‚ climate‚ and the Earth Answer: a 3) _____ Computer simulations designed to predict changes in the atmosphere and in the
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WATER QUALITY AND CONTINMINANTION Introduction I. Body Paragraph #1 – Background~ Water quality is decided by assessing three classes of attributes: biological‚ chemical‚ and physical. There are criteria of water quality set for each of these three categories of properties. The standards for drinking water are developed by the Environmental Protection Agency (EPA)‚ World Health Organization (WHO) etc. All municipal (public) water supplies must be measured against these standards. Testing how
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Self Heating Food and Drink Cans Heater meals – originally developed for military use – are ready-made self-heating meal packs. They can be heated in many ways – by pressing a button on the packaging‚ unwrapping and shaking the pack‚ or pouring the contents of one bag into another and waiting for a few minutes – all of which use exothermic chemical reactions. These meals can be used to motivate students to study such reactions relatively safely and without the use of a burner. Plus there is the
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2. Objectives The objectives of this experiment are to observe the keeping quality of some food products‚ study the various simple methods of moisture determinations using different drying method. And determine the water activity in some food samples such as biscuits‚ bread‚ flour and instant noodles by using water activity measurement machine. 3. Theory To determine the moisture content in the food‚ methods such as open dish method and infrared balance method are used. 3.1 Hypothesis
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