Ozone Layer Depletion free essay sample

This will cause humans suffering like skin cancer and UV radiation may kill plankton. CFCs will also cause global warming. We should take action to protect our ozone layer. We have to ban the use of CFCs products. United State have already signed a treaty to phase out CFC production, known as the Montreal Protocol. Besides, we should always unplug or switch off electronic instruments when they are not in use. We can plant trees as they absorb the UV rays and try to use products which are labeled ‘Ozone-Friendly’. In conclusion, we should start now to care for and save our earth. Introduction Ozone is a gas that occurs naturally in our atmosphere. Most of it is concentrated in the ozone layer, a region located in the stratosphere several miles above the surface of the Earth. Although ozone represents only a small fraction of the gas present in the atmosphere, it plays a vital role by shielding humans and other life from harmful ultraviolet light from the Sun. We will write a custom essay sample on Ozone Layer Depletion or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page In fact, a major hole in the ozone layer above the Antarctica skyline now threatens the continent badly. There are plenty of causes and effects of ozone depletion, CFC emission being one. Findings Factor of Ozone Depletion Human activities in the last several decades have produced chemicals, such as chlorofluorocarbons (CFCs). It has been released into the atmosphere and has contributed to the depletion of this important protective layer. In fact, the most important cause which accounts for almost 80% of the total depletion of ozone layer in the stratosphere are CFCs. Beder (unknown) stress the ozone layer is being broken down by chlorine atoms from CFC molecules and bromine atoms from halons. These compounds are very stable in the lower atmosphere of the earth. While in the stratosphere, they break down to release a free chlorine atom due to ultraviolet radiation. A free chlorine atom reacts with an ozone molecule (O3) and forms chlorine monoxide (ClO) and a molecule of oxygen. Now chlorine monoxide reacts with an ozone molecule to form a chlorine atom and two molecules of oxygen. The free chlorine molecule again reacts with ozone to form chlorine monoxide. The process continues and the result is the reduction or depletion of ozone in the stratosphere. Effect of Ozone Depletion Therefore, these factors bring a lot of problem on our daily life. For examples, LensMan999 (unknown) stresses that the ozone depletion will lead an increase in the percentage of skin cancer and cataracts. In addition, figure 1 from the reference shows that the UV radiation may damage crops, kill plankton that serve as a food source for marine life. The human immune system also will be affected. CFCs may trap heat and thus contribute to the global warming. As ScienceDaily (2011) shows ozone hole linked to climate change all the way to the equator. Solution on Ozone Layer Depletion September 16 was voted the world ozone day in the year 1994 by the United Nations General Assembly. This proves ozone depletion is a big issue that needs attention. Hence, we should be aware and actions must be taken to ensure that ozone layer is not destroyed. Firstly, we have to ban the use of CFCs product as it contains a lot of ozone depleting substances (ODS). But it is difficult to do so because so many products including refrigerator, air-conditioning, cleaning agents and so on contains this product. CFCs would remain in the stratosphere for another 100 years if none we have taken for the problem. Developed countries like the United States have already signed a treaty to phase out CFC production. On the date of 16th September 1987, the Montreal Protocol to prevent ozone depletion was opened for signing. Villanueva (2010) explain that it is a testimony of what humans can achieve when they put their minds and strengths together to face a common threat. Montreal Protocol, 30 nations worldwide agreed to reduce usage of CFCs and encouraged other countries to do so as well. By the year 2000, the United States and twelve nations in Europe have agreed to ban all use and production of CFCs. This will be highly significant as these countries produce three quarters of the CFCs’ product in the world. (Harankhedkar 2011) Many other countries have signed treaties and written laws restricting the use of CFCs. Companies are finding substitutes for CFCs, and people in general are becoming more awareness of the dangers of ozone layer depletion. At last, The Montreal Protocol has resulted in stopping additional ozone loss and investigated by 300 experts ver 4 years survey on ozone depletion Earth Day was first observed on 22 April 1970. An estimated 20 million people nationwide attended this festivity which came the largest grassroots environmental Besides that, not only the government but also the residents have a role to play and avoid ozone depletion. We should always unplug or switch off the electronic instruments when they are not in use. We also are encouraged to walk and avoid using vehicles if we can. Simple measures like using public transportation instead of our own private vehicle will help a big deal. We can plant trees from now as they produce oxygen and absorb the UV rays greatly. We can try to use products which are labeled â€Å"Ozone-Friendly†. We are suggested to use the renewable sources, for examples, wind, solar energy, and so on. D. Brack (1997) reminds the United Nations officers that they have a role to play to produce and ensure that the new equipment purchased is ODS-free. Conclusion As you see, most ozone depletion resulted from the human activities. Hence, we should always remind ourselves and raise awareness on the ozone depletion. Making small changes in our habit can make a difference in our future. Although those CFCs’ product are making our lives so comfortable but we should start now to care for and save our earth. Recommendations Government should always take action. Not only to organize the â€Å"Earth Day† on 22 April but also to find the way of looking on the residents’ co-operation. Citizens should always support the government and do their own respond of how to protect our ozone layer. Companies should not use the ODS and turn to product that is ozone-friendly as many as possible. Ozone layer depletion free essay sample The increased cancer levels caused by exposure to this ultraviolet light could be enormous. Recent studies estimates that 60 million Americans born by the year 2075 will get skin cancer because of ozone depletion. About one million of these people will die. In addition to cancer, some research shows that a decreased ozone layer will increase rates of malaria and other infectious diseases. According to recent studies 17 million more cases of cataracts can also be expected. . The environment will also be negatively affected by ozone depletion. The life cycles of plants will change, disrupting the food chain. Effects on animals will also be severe, and are very difficult to foresee. Oceans will be hit hard as well. The most basic organisms such as plankton may not be able to survive. If that happened, it would mean that all of the other animals that are above plankton in the food chain would also die out. We will write a custom essay sample on Ozone layer depletion or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Other ecosystems such as forests and deserts will also be harmed. The planets climate could also be affected by depletion of the ozone layer. Wind patterns could change, resulting in climatic changes throughout the world. Global warming is the continuing rise in the average temperature of Earths atmosphere and oceans. Global warming is caused by increased concentrations of green house gases in the atmosphere, resulting from human activities such as deforestation and burning of fossil fuels. Some of the effects of global warming and climate change on the environment include the folloing Ozone Layer Depletion free essay sample The ozone layer protects the Earth from the ultraviolet rays sent down by the sun. If the ozone layer is depleted by human action, the effects on the planet could be catastrophic. In recent years, the ozone layer has been the subject of much discussion. And rightly so, because the ozone layer protects both plant and animal life on the planet. The atmosphere is divided into five layers:   the troposphere, the stratosphere, the mesosphere, the thermosphere, and the exosphere. The troposphere is the layer closest to earth and is where all weather happenings occur. The stratosphere is located directly above the troposphere, about 10-50 kilometers above the planet, and houses the ozone layer at an altitude of 20-30 kilometers. The mesosphere is located approximately 50-80 kilometers above the earth, while the thermosphere rests at an altitude of approximately 100-200 kilometers above the earth’s surface. Finally, the boundary of the outermost layer, the exosphere, extends roughly to 960-1000 kilometers above the earth. We will write a custom essay sample on Ozone Layer Depletion or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Figure 1:   Earths atmosphere is divided into layers, which have various characteristics. The ozone levels have decreased to a normal level. Normal meaning the levels have dropped from the levels reported in 1980. The ozone layer is an important and fragile part of earth. If we did not have an ozone layer between 10km and 50km, high ultraviolet radiation would pour through. This would create harmful living conditions for all life forms. The fact that the ozone layer was being depleted was discovered in the mid-1980s. The main cause of this is the release of CFCs, chlorofluorocarbons. Antarctica was an early victim of ozone destruction. A massive hole in the ozone layer right above Antarctica now threatens not only that continent, but many others that could be the victims of Antarcticas melting icecaps. In the future, the ozone problem will have to be solved so that the protective layer can be conserved. The ozone layer:   What is it? The ozone layer is a portion of earth’s atmosphere that contains high levels of ozone. The ozone found in our atmosphere is formed by an interaction between oxygen molecules (composed of two oxygen atoms) and ultraviolet ight. When ultraviolet light hits these oxygen molecules, the reaction causes the molecules to break apart into single atoms of oxygen. These single atoms of oxygen are very reactive, and a single atom combines with a molecule of oxygen to form ozone, which is composed of three atoms of oxygen. The ozone layer protects the Earth from the ultraviolet rays sent down by the sun. If the ozone layer is depleted b y human action, the effects on the planet could be catastrophic. The ozone layer is essential for human life. It is able to absorb much harmful ultraviolet radiation, preventing penetration to the earth’s surface. Ultraviolet radiation (UV) is defined as radiation with wavelengths between 290-320 nanometers, which are harmful to life because this radiation can enter cells and destroy the deoxyribonucleic acid (DNA) of many life forms on planet earth. In a sense, the ozone layer can be thought of as a ‘UV filter’ or our planet’s ‘built in sunscreen’ (Geocities. com, 1998). Without the ozone layer, UV radiation would not be filtered as it reached the surface of the earth.

Writing a Sample Visual Analysis Essay

Writing a Sample Visual Analysis EssayIf you are looking for an easy way to start writing a sample visual analysis essay, consider using the W.A.I.N.G template as your guide. If you already have some experience in the area of college composition, there are numerous samples out there that you can use to get started.First, take a look at the sample visual analysis essay and see if it interests you. Do you have ideas that are similar to what is being presented? Use your best judgment to determine if your ideas are being presented accurately and not, or if the content is either too complex or too simplistic. You will find that many people who are interested in writing an essay have ideas that are similar to what is being offered in this sample essay.Once you have identified whether or not you have ideas similar to the one being offered, go back and determine how you will base your opinion of the material and how you will be able to relate it to your primary source material. Be sure to be very clear about your choice of sources when you are writing a visual analysis essay.Keep in mind that you should put emphasis on the topic of the visual analysis essay. This is where you want to get into the details of the essay. To do this, read and re-read the paragraphs to make sure you have the correct focus on your choice of material.Many times, people who are writing a visual analysis essay will be drawing conclusions based on the ideas they have seen. This is why they need to ensure that their conclusion is based on solid ideas.Remember that this means that they have to choose specific data. If they choose random data, it might not be the most accurate data they have ever collected, so that can be a good sign that they are losing sight of the main point of the essay. When you begin to write a visual analysis essay, you will notice that the actual essay can vary depending on the choice of theme that you choose. You should be prepared for it to be long because if you don't kn ow what you are doing, the essay could get much longer than you expected. Some examples of themes that may be in a visual analysis essay include: Plant Diversity; Monuments; Embedded Cultures; and Stages of Conflict.Another tip for writing a visual analysis essay is to write a story. Instead of just telling a story, use it as a way to relay important information that you will be presenting. It is easier to talk about something if you were there and if you had personal experience with it, but sometimes it is more effective to relate it to some type of story that makes sense.