Introduction: Since the dawn of civilization man has a close relation with nature. Man has made friendship with nature. Nature helps us in many ways. Similarly trees are closely related with our life. They are our friends. They play an important role in our life and economy. Proper place for plantation: In Bangladesh June and July are the best time for tree plantation. Bangladesh is a lower riparian country. So‚ Upper levels are the best suitable places to plant trees. Sea beaches and low lying
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SAVE TREES Trees are very important for our survival in many ways. They clean the soil by filtering sewage and chemicals used in farms. They help control noise pollution and reduce flash flooding. Trees absorb carbon dioxide which contributes to global warming. They also clean the air by absorbing pollutants like carbon monoxide and sulphur dioxide. They also help to lower temperatures. They give shade during the summer and act as windbreaks during winter if they are located on the windward side
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As the world is incessantly changing‚ there are many attributes which are leading towards a prosperous life but on the contrary‚ some problems are spreading of great magnitude; one of them is pollution. Pakistan is one of the developing countries which are sustaining the pollution problem.Traffic congestion is one of the main causes of air pollution. The usage of old transports is ruining the situation. No prevailing laws are strictly implemented‚ as a result‚ factories exude their smoke into the
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***ANSWERS*** CP Chemistry Mole Review Practice Problems Find the mass of 0.89 mol of calcium chloride. 0.89mol x 111 g / 1 mol = 98.8 g Determine the number of moles of C5H12 that are in 362.8g of the compound. 362.8g x 1 mol / 72 g = 5.04 mol Find the mass of 0.159 mol of silicon dioxide. 0.159 mol x 60 g / 1 mol = 9.54 g You are given 12.35 g of C4H8O2. How many moles of the compound do you have? 12.35 g x 1 mol / 88 g = 0.140
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Maria Reyes iLab‚ Week #3 ATOMIC WEIGHT OF MAGNESIUM LAB Introduction The purpose of this lab was to determine the atomic weight of magnesium by measuring the amount of hydrogen gas evolved when hydrochloric acid reacted with magnesium. In order to measure the atomic weight I needed to measure the amount of the hydrogen gas that was evolved in reaction to the acid of the magnesium. The reaction used was: Mg + 2HCl --> H2 + Mg2+ (aq) + 2Cl- (aq). The major findings of this experiment were that
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Paramecium is a unicellular ciliate from the kingdom Protista. Paramecium can swim in the water. However‚ when you add different chemical into water‚ it will affect the swimming speed of the paramecium. The various students groups have individual experiment of how dose NaCl affect swimming speed of Paramecium‚ but the experiment did not show the result clearly to students. Therefore‚ after they finish the presentation‚ most of the students want to find out the chemical NaCl increases swim speed of
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Materials Used for the Engine Block The engine is the single most important part of the automobile. Without it‚ the car simply will not move. It is important that the cylinder or engine block is built to withstand the high temperatures and pressures that are put into it and it is equally important that the engine block is built to last. Over the years‚ materials used for making engine blocks have changed and materials sciences have matured enough to find the best possible materials to build engine
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The changes taking place in the metal container industry at the time of the Crown‚ Cork and Seal case using Porter’s 5 forces can be described as follows: Current Players There was a high concentration of market share held by five companies in the metal can industry. Collectively‚ the five companies held 61% of the market‚ with the remaining 39% shared by approximately 100 firms. With the five firms holding a large market share‚ the competitive environment becomes more like a monopoly and therefore
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1‚ radiation processing method The main advantage of the thorium content of the different rare earth minerals and gangue minerals in the ore‚ the use of the gamma-ray concentrator to separate rare earth minerals and gangue mineral. The radiation processing method used for the preselection of the rare earth ore. At present‚ this method is not widely applied in industry. 2‚ the gravity separation method The use of different rare earth minerals and gangue mineral density separation. The re-election
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Table of Contents Acknowledgement…………………………………….. 3 Abstract…………………………………………………. 4 Introduction ……………………………………………. 5 Review of Related Literature………………………… 6 Methodology…………………………………………… 7 Results and Discussions……………………………… 9 Conclusions……………………………………………. 11 References…………………………………………….. 12 Acknowledgement At first‚ I wanted to thank God‚ because He had a great contribution on my research. He gave me intelligence in this research. He also gave
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