Risk Assessment for Chlorofluorocarbons essays

Risk Assessment for Chlorofluorocarbons essays The use of chlorofluorocarbons has always been a controversial issue. Like many elements and compounds, chlorofluorocarbons (CFCs) have benefits and drawbacks, and for this reason is why their use has been a topic of discussion. CFCs have various positive and negative impacts on the economy, the environment, and on society and health. Through assessing and comparing the benefits and risks of the uses of CFCs, we can come to conclusions to whether to continue or discontinue its use. The usage of CFCs has a huge, positive impact on the economy. CFCs are man made and produced with a simple chemical reaction, therefore it can be manufactured with high purity. Because of this, it is very uncomplicated and economical to make in industrial quantities. (Pool) CFCs have a high versatility and were used in hundreds of uses in manufacturing and consumer products. (Knapp 13) They can be used for so many purposes because they are non-toxic, non-flammable, non-corrosive, and very stable. (Smith and Vincent) The manufacturing of CFCs brings in about $300 million U.S. a year for Mexico. This is significant for Mexico because it is an economically developing country. (Smith and Vincent) Because the Montral Protocol banned the use of CFCs in some nations, developing replacements will be expensive, and all the ones tested so far are not as effective of CFCs. (Dhooge, Glass and Nimitz) The economic benefits of CFCs are respectable, however, there are also drawbacks for the envi ronment. One of the main reasons as to why the usage of CFCs has been so controversial is because of its negative role in the depletion of the ozone layer. Because CFCs are so stable, they do not readily react with other chemicals in the lower atmosphere. (Chlorofluorocarbons or CFCs) CFCs migrate up to the stratosphere and are broken down by ultra violet radiation. This then releases chlorine atoms and they attack countless ozone molecules. (Knapp 12) ...

Professor Says…25 Motivational Quotes about Studying

Professor Says†¦25 Motivational Quotes about Studying Weve scoured and crawled through endless droves of digital archives to find the top 25 motivational quotes about studying. Here there are. And†¦you may want to take some notes! 1. A mind of moderate capacity which closely pursues one study must infallibly arrive at great proficiency in that study. Mary Shelley, from Frankenstein 2. Excellence is a better teacher than mediocrity. The lessons of the ordinary are everywhere. Truly profound and original insights are to be found only in studying the exemplary. Warren G. Bennis 3. There is nothing, Sir, too little for so little a creature as man. It is by studying little things that we attain the great art of having as little misery and as much happiness as possible. Samuel Johnson 4. It is not that Im so smart. But I stay with the questions much longer. Albert Einstein 5. Study hard what interests you the most in the most undisciplined, irreverent and original manner possible. Richard P. Feynman 6. If we let ourselves, we shall always be waiting for some distraction or other to end before we can really get down to our work. The only people who achieve much are those who want knowledge so badly that they seek it while the conditions are still unfavorable. Favorable conditions never come. C.S. Lewis 7. The expert knows more and more about less and less until he knows everything about nothing. Mahatma Gandhi 8. No art or learning is to be pursued halfheartedlyand any art worth learning will certainly reward more or less generously the effort made to study it. Murasaki Shikibu 9. I will study and get ready, and perhaps my chance will come. Abraham Lincoln 10. Those who do not study are only cattle dressed up in mens clothes. Chinese Proverb 11. No man ever reached to excellence in any one art or profession without having passed through the slow and painful process of study and preparation Horace 12. You dont want a million answers as much as you want a few forever questions. The questions are diamonds you hold in the light. Study a lifetime and you see different colors from the same jewel. Richard Bach 13. Training is everything. The peach was once a bitter almond; cauliflower is nothing but cabbage with a college education. Mark Twain 14. A man who has never gone to school may steal from a freight car; but if he has a university education, he may steal the whole railroad. Theodore Roosevelt 15. No student knows his subject: the most he knows is where and how to find out the things he does not know. Woodrow T. Wilson 16. Our delight in any particular study, art, or science rises and improves in proportion to the application which we bestow upon it. Thus, what was at first an exercise becomes at length an entertainment. Joseph Addison 17. Wealth and honours, which most men pursue, easily change masters; they desert to the side which excels in virtue, industry, and endurance of toil, and they abandon the slothful. John Milton 18. If youre trying to achieve, there will be roadblocks. Ive had them; everybody has had them. But obstacles dont have to stop you. If you run into a wall, dont turn around and give up. Figure out how to climb it, go through it, or work around it. Michael Jordon 19. Lost wealth may be replaced by industry, lost knowledge by study, lost health by temperance or medicine, but lost time is gone forever. Samuel Smiles 20. Study is the bane of childhood, the oil of youth, the indulgence of adulthood, and a restorative in old age. Walter Savage Landor 21. Recruit your pet as a study partner. Cats are usually more than happy to do this in fact, you may have trouble keeping them off keyboards and books and dogs will often serve as well. Few things are more relaxing than having a warm, furry creature next to you as you study. Stefanie Weisman 22. No policeman had ever arrested anyone for over-reading; but ignorance prosecutes those who under-read. You begin to stop growing on the day you stop learning, so why not keep learning and keep growing! Israelmore Ayivor 23. Learning is acquired by reading books; but the much more necessary learning, the knowledge of the world, is only to be acquired by reading man, and studying all the various editions of them. Lord Chesterfield 24. Whoever raises his voice while studying will find that his learning endures, but one who reads silently will soon forget Unknown 25. Nobody can discover the world for somebody else. Only when we discover it for ourselves does it become common ground and a common bond and we cease to be alone. Wendell Berry How about you? We all see things differently, so what quote out there has helped propel you through some grueling studying?