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Impact of automobiles
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The internal combustion engine has become an integral part of the lives of every person on earth. They’re the devices that have allowed us to cross continents reliably, generate electricity in remote areas and fly around the world in a matter of hours. All these engines do is burn fuel and convert its energy into work. It’s these heat engines that have really changed the world. However the convenience they bring has come at a great cost. The major problem with the internal combustion engine is the environmental damage it has caused. It is only now we are beginning to realise the full extent of this damage.
In the mid-seventies basic steps were taken to reduce the pollution caused by cars, which of course at their heart is an internal combustion engine. The first and most obvious source of pollution from cars is the Exhaust pipe. Exhaust emissions contain carbon monoxide, unburned hydrocarbons and oxides of nitrogen. Also a small amount of solid matter, or particulates, is emitted in the form of lead from the tetraethyl lead used in fuel to increase its octane rating. It was found that these pollutants were having an adverse effect on the environment and in extreme cases were actually causing visible ‘smog.’ But exhaust emissions in pre-70’s cars were only accounting for 55% of automotive air pollutants. Another major source was emissions of hydrocarbons from the engine’s crankcase. They occurred because during combustion there is a small amount ...
We cannot dispute that automobiles, factories, and power plants, displace an unprecedented twenty tons of carbon monoxide - per person - per year. There needs to be a reduction in emissions, yet we cannot focus on this aspect of global warming alone. There are many indicators that climatic change is influencing the frequency and intensity of natural catastrophes. If scientific global climate models are accurate, the present problems will be magnified in the near future.
The job outlook for the physical education teacher job market is expected to grow by 12.2% between 2012 and 2022. This increase is pretty close to the rate the athletic director field is supposed to increase. The training and skills necessary to enter the field are a Bachelor’s degree which is common in most states but some states require a master’s degree. The skills that would be needed is instructing, speaking, active listening and learning, critical thinking, and monitoring and assessing
Driven in large part by global initiatives and the potential for stringent regulations, the past decade or two has seen a marked increase in the importance of improvements with respect to environmental standards, including emissions and increases in fuel economy. In 2002, Cummins Emissions Solutions was launched after the need was identified for an emission solution that would help engines meet future regulations. In 2006, Cummins pioneered a hybrid diesel-electric bus which reduced fuel consumption and greenhouse gasses by more than 30 percent and me...
The tradeoffs of using gasoline for cars are large emission of carbon dioxide and required large amount of chemical t...
Well, we can start off by saying TSA isn’t going anywhere anytime soon as much as we’d love for it to be long gone. One of the biggest solutions to not only help lines move faster, but cut down the billions of dollars that TSA spends on security, is to profile people. As inadequate as it sounds, we are profiled every single day. To what we’re wearing, our hairstyle, our language, our ethnicity, etc, someone is always going to judge you based on first appearance. Police officers are the biggest profilers in the world. Christopher Elliott concedes that there’s been a lot of talk lately about the TSA adopting Israeli-style screening techniques, including profiling every airline passenger. This makes sense. Terrorists who bomb airlines tend to fit a certain description (Elliott). Profiling can be done in two different ways. Philip Baum of the NY Times, acknowledges that effective profiling is based on the analysis of the behavior and appearance of a passenger (Baum). Profiling isn’t always based on race, religion, nationality, or color of the
You need to figure out what works for you and your teen. Some families allow their child to drink at certain meals or family gatherings so they can get accustomed in a safe setting to the effects of alcohol. Other parents try to enforce a strict abstinence approach. Have a conversation with your son and make certain your expectations are clear.
The selfish nature of McCandless’s actions is most evident in the results of his actions on Ronald Franz. The story recounts such results in this quote: “When Alex left for Alaska," Franz remembers, "I prayed. I asked God to keep his finger on the shoulder of that one; I told him that boy was special. But he let Alex die. So on December 26, when I learned what happened, I renounced the Lord. I withdrew my church membership and became an atheist. I decided I couldn 't believe in a God who would let something that terrible happen to a boy like Alex. After I dropped off the hitchhikers," Franz continues," I turned my van around, drove back to the store, and bought a bottle of whiskey. And then I went out into the desert and drank it. I wasn 't used to drinking, so it made me real sick. Hoped it 'd kill me, but it didn 't. Just made me real, real sick.”(Krakauer, pg 56.) McCandless was very aware that Franz loved him, and again he was not willing to reciprocate this love. However, the way that McCandless was able to disregard Franz’s love and care and knowingly leave him in despair shows that McCandless did not care about the impact his leaving would have on others. He cared about fulfilling his life and living by his beliefs at the costs of others. A similar situation occurred with McCandless’s family. Although angry at his father, McCandless had less resentment for his mother and much less if any for his sister. He knows that they also loved him and cared for him, but he was able to leave with a clean conscience and allow them to live in worry and eventually agony and despair. His so called courages was actually an unrealistic point of view and a result of his not valuing his life. If only because of the selfishness of his actions, McCandless should not be admired
Today, an average of 4,358 drinkers under the age of twenty-one are diagnosed with alcohol as a factor of their death. Mother Aleae Pennette never would have guessed that July 10, 2011 would be the day that her daughter would add on to that statistic. Fourteen year old Takeimi Rao was found dead that morning after mixing vodka and soda with her friends during a sleepover (Conley). Though extremely tragic, Takeimi was only one of 8.7 million minors and young adults (ages twelve to twenty) that reported having more than “just a few sips” of alcoholic beverages in the past month. Additionally, her age group is responsible for 11% of the alcohol consumed in The United States (“Underage Drinking”). Although the concept may seem implausible to some, the involvement that children had with alcohol nearly one hundred years ago could be an indirect cause of the millions of underage drinkers in The United States
Today, teenagers grow up in a world that glamorizes underage drinking. We see it in television advertisements, movies, magazines, snapchat stories, you name it, and we have probably seen it. In the United States the minimum limit drinking age (MLDA) is 21, but in many other countries such as Canada and almost everywhere in Europe, their MLDA is 18 or 19. Many criticize the United States, having one of the highest MLDAs, due to the fact that teenagers haven’t had the opportunity to learn how to drink safely and responsibly. In America most students reach college from the age of 17 to 19 and are drawn into the world of parties, which almost always includes alcohol. The only prior knowledge students have on the subject is what they have gathered from watching their parents, or more likely what they have seen on television or
Alcohol is a drink that is a common social norm in our society today. Alcohol is rising concern for not only adults, teenagers too. This is not a new situation and the concern has existed for years. Teenage drinking has become one of the largest social issues among young people in America today. There is simply no way of preventing underage drinking although it is illegal, there are ways to inform teenagers the effects and harm it does to your body. You simply can not tell college kids they can’t drink, it is unenviable, but again teaching the consequences and concerns can further their education with alcohol related substance and situations in which they encounter.
Underage drinking is wrong. It is very unhealthy and can be extremely dangerous. Not only is it unhealthy and dangerous it is also illegal. (Kids don’t try this at home). Underage drinking is when anyone under the minimum legal drinking age of 21 drinks alcohol. Alcoholic beverages include: beer, wine, liquor, etc. With underage drinking comes a heavy price, underage drinking carries a lot of risk and potential serious injuries. It can get teens into a multitude of troubles such as, problems with the law, with family, friends, social life, and more. The more teens know about the facts and consequences of this harmful venture the better off they are from becoming one of the many statistics associated with underage drinking.
Now let’s back up for just a second, why are kids drinking in the first place? Do they have family problems? Are they trying to escape something? Or do they just want to fit in with their friends? As children grow to become young adults, they experience physical, emotional, and lifes...
Many hazardous pollutants escape from the internal combustion of the engine. Conventional gas powered vehicles use irreplaceable fossil fuels to run. When burned, these fossil fuels create numerous toxins like carbon dioxide (Larminie 246). Carbon dioxide is considered the main greenhouse gas that creates the foundation for global warming (hybridcars.com, pollutants). This harmful pollutant may not have a serious effect on people at first, but it does have consequential effects on the environment that in turn put people in danger (Nutramed.com). The major consequence caused by global warming is the rise in average temperature. This results in a domino...
When you hear the word coach and then the word mentor, you might think these words are very much alike. However, they are very different, not only in the characteristics that make up each one but also in how they approach the learner/mentee. The purpose of coaching is to improve an individual’s performance on the job. A coach is someone capable of teaching how to develop skills, mainly by setting goals for the learner. For example, lets take a football coach who is considered an expert in the sport. He has several goals in mind for his team, which includes winning. His plan is to help them develop certain skills to attain that goal; it might be through teamwork, cooperation, strategic thinking, etc. The relationship between the coach and the
There are a number of reasons why teenagers feel the urge to drink. Social environment, peer influence, stresses, and even factors such as media influence contribute to underage drinking. Peer pressure is as well known use among teens. Americans have a burning desire to be accepted and liked by their peers. Everyone wants to feel a sense of belonging. Many adolescents feel that they need to drink alcohol to gain this acceptance by the others around them. Stress is also another reason why teens may feel apt to drink alcohol. Stress causes teenagers to look for a quick escape from the problems, which they face, in their day-to-day lives. This quick escape can be found in the shape of a bottle. In the eyes of an underage drinker, alcohol is the cure to all problems, a way to forget all of stress and pressures that are facing them. They feel that it will numb their pain and continuing to use alcohol will result in maybe another problem, substance abuse.