Environmental Speech Essay Example for Free

Environmental Speech Essay My speech will be about Global warming, this is the rise in the average temperature of the Earth’s atmosphere and oceans. In 2011 the emission of carbon dioxide and was the highest it had ever been before and it had also taken a similar jump in 2012. Over all, emissions of carbon dioxide had jumped 3 percent in 2011 and in 2012 it was estimated that it had jumped another 2. 6% in 2012. Scientists are 90% sure that Humans are the cause global warming from producing greenhouse gases produced by human activity like using a car which is burning fossil fuels and also is caused deforestation. Since the early 20th century the Earth’s average temperature has increased by 0. 8 degrees centigrade. The effect of an increased temperature will result in the rise of sea levels. Global warming is strongest in the arctic and causes a more frequent occurrence of extreme weather events such as heat waves, heavy rainfall, droughts and species extinction. How do we stop Global Warming? Turning the thermostat down a few degrees can make a big difference in decreasing our carbon dioxide emissions. Replacing a regular light bulb with compact florescent lights will save you ? 15 over the life of the bulb and reduce global warming. Driving less and using public transport more often will reduce the carbon dioxide from the burning of fossil fuels which are burnt every day from transportation vehicles. Decorating your house with plants and trees will help as they take in carbon dioxide and produce oxygen.

Fetal Alcohol Syndrome (FAS) Essay -- essays research papers

Fetal Alcohol Syndrome (FAS) One of the leading causes of mental retardation in the United States is fetal alcohol syndrome or FAS. Alcohol is the most commonly abused substance by pregnant women because it's legal and socially acceptable. A greater majority of young women are not aware of the complications that are involved with pregnancy. They see pregnancy as a way of bringing a life into the world but do not use the necessary safety measure in their dietary habits to prevent such damage or inhibitions of such a life. By continuing on their drinking binge throughout their pregnancy, they can cause an inexplicable damage to herself and the fetus she is carrying. In my opinion, any amount of alcohol combined with pregnancy can cause devastating effects to the fetus. "Neurobehavioral deficits have been found in infants whose mothers reported fewer than seven standard drinks a week, and the effects of drinking in early pregnancy (the first trimester) are among the more severe of alcohol's effects on the fetus, causing irreversible facial malformations and neurological damage" (Kaskutas & Graves, 2001). Lee Ann Kaskutas and Karen Graves believes that the precision of measurement of how much a woman drinks throughout pregnancy is very important to the assessment of fetal risk (2001). The title of their study, "Pre-pregnancy drinking: How drink size affects risk assessment", can help us conclude that the independent variables are the drink sizes and the dependent variable is the risk assessment. From the introduction section, I have learned that in the United States, American Indians and African Americans are at the highest risk for FAS. Even though there have been advances in research methodology, people can have a misconception on the concept of what is a standard drink. When asked how much they drank on previous surveys, previous participants had a misconception on the drink sizes. "This has implications for FAS risk assessment, as underestimates of alcohol consumptions could lead researchers to conclude that increasingly lower safe thresholds of consumption are called for" (Kaskutas & Graves, 2001). The authors found that half of the subjects under study have underestimated the amount of alcohol in their various drinks. The authors believed that most women ... ...ance on standard drinks results in considerable underestimation of alcohol consumption, especially among the heavier drinkers and those consuming higher alcohol content beverages" (Kaskutas & Graves, 2001). It is concluded in this research that standard drink sizes assume a much smaller size than self-defined drink sizes. The authors did note that this study has several limitations. First, their sample included only few white subjects with no Hispanics, Asians and other ethnic groups. Also, "the vessels methodology should be used with expanded samples to determine whether large drink sizes are represented among other groups of pregnant women" (Kaskutas & Graves, 2001). Future research could include specifications of standard drink size for different types of alcohol when assessing risk for FAS. "Consideration of drink size represents a promising avenue both for alcohol research and for alcohol prevention and education, with pregnant women and more broa dly with the general population" (Kaskutas & Graves, 2001). Reference Kaskutas, L.A., Graves, K. (2001). Pre-pregnancy: How drink sizes affects risk assessment. Addiction, Vol 96(8), 1199-1209.

Popuarity of fast food outlets Essay

10. Discuss the causes of popularity of fast food. In recent years, there have been many studies conducted on fast food. According to the results of these studies, fast food has become an indispensible part of human life and has become quite popular. There are numerous reasons for the popularity of fast food restaurants among which the two most important ones are that they are cheap and easily available. To begin with, one of the most significant reasons why many people today opt for fast food restaurants is that fast food is cheap. That is to say, because the cost of the ingredients of fast food is low, the prices are also low . Therefore, as expected, people have more of a tendency to eat fast food. For instance, students have generally limited pocket money and they tend to spend their money carefully. Thus, this situation compels them to eat fast food because it is more affordable for them. Briefly, the cheapness of fast food is one of the leading causes of its popularity. Another important reason why fast food restaurants are so popular is that they are easy available. In other words, today fast food branches are very widespread and people can find them almost everywhere. People can eat food without searching for a restaurant for a long time and when they find it, they don’t have to wait for long. To illustrate, students have limited time between classes and they can easily get fast food such as toasts and hamburgers in a place close to their school. In short people do not need to spend much time eating thanks to fast food. In conclusion, there are a myriad of reasons why fast food restaurants are very popular. We always focus on the neglect effects of eating in fast food restaurants but actually we need to examine the causes of its popularity. Two main reasons are that fast food is affordable and easily available. Nevertheless, people, especially children, should be well informed about negative effects of fast food.

Naval Architecture Ship Displacement Tonnage

Displacement Tonnage, sometimes just called displacement, is just one way a ship is measured by weight. Naval architects who design all kinds of vessels have goals to build the ship as close to the designed weight as possible. This helps ensure that it performs as expected in all sorts of conditions, and can carry loads or maintain desired cruising speed. Why Is Displacement Tonnage Used? Organizations who set rules and standards for ships use displacement tonnage as a way to classify different sizes of ships. Ports and harbors use displacement tonnage as one of the criteria when determining berthing charges. To understand the concepts related to displacement we will use a simplified example. The first thing we need to know is that water has weight and for the example, were  going to say eight pounds per gallon because of its close to 3.5 kilos. In the real world, water varies a little bit if it is fresh or salt water and weighs less when it gets hot since it expands slightly. Our ship is going to be a simple box with an open top and flat bottom. Now we float the box in some water. Because it has the weight it will push some of the water out of the way as it floats. On the side, we mark a line where the water comes up the sides of the box. This Is Called the Water Line Creative, right? If we take our box out of the water and fill the inside with water up to the waterline we can measure how many gallons it takes. Then we can multiply that number of gallons by eight because we said our water weighed exactly eight pounds per gallon. Lets say it took 100 gallons to fill our box to the Water Line. The total weight of that water is 800 pounds and if we weigh our box we will see that it weighs exactly the same, 800 pounds. So displacement means; what is the weight of the water displaced by the hull of a ship up to the waterline. If the vessel is a cargo ship the waterline may change and be measured with Load Lines but displacement tonnage is always measured with a ship completely empty of cargo. Weight-in-Tons The word tonnage is just another way to say weight-in-tons. In a simple hull design called a displacement hull, the waterline is easy to place and it can change according to load. Almost all big cargo ships have displacement hull designs so they can carry the maximum cargo. Another type of hull has multiple chines, or levels, that the vessel rides on at different speeds. These hulls lift the boat out of the water to reduce resistance and increase speed. Many small recreational boats have this design but its also found on warships like the Littoral Combat Ship. In the case of these hulls, the desired waterline must be carefully calculated to achieve the desired performance and angle of attack at any speed.