Air and Water Pollution essay Essay Example

Air and Water Pollution essay Paper The chemical composition of the atmosphere today is so different as compared to the atmosphere that existed before the Industrial Revolution, 1760 1830. To define air pollution, we should first consider all those sources that release harmful chemicals into the atmosphere and alter its chemical composition. First of all, all anthropogenic (man-made) emissions are air pollutants. Next, is the natural emission which can be divided into boogieing and genetic. Boogieing emissions result from the living world such as volatile organic compound emissions from forests and CHI emissions from swamp. On the other hand, genetic emissions are from the non-living world, such as volcanic emissions, sea-salt emissions, and natural fires. So, keeping all these sources in mind, air pollutant can be defined as any substance that is released into the air from anthropogenic, boogieing and genetic sources, which is maybe not a component of the natural atmosphere or which is present in higher concentrations than it is present naturally in the atmosphere, and may impose harmful effects either in short or long terms. Therefore, air pollution can be defined as the presence of harmful substances n the atmosphere which is maybe not a component of the natural atmosphere or which is present in higher concentrations than it is naturally present in the atmosphere, that can impose short or long term effects, which is emitted by either anthropogenic, boogieing or genetic sources. AIR POLLUTANTS Air pollutants can be divided into primary and secondary pollutants. We will write a custom essay sample on Air and Water Pollution essay specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Air and Water Pollution essay specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Air and Water Pollution essay specifically for you FOR ONLY $16.38 $13.9/page Hire Writer Both primary and secondary pollutants are known to cause harm if present in high concentrations. Primary pollutants are those that emitted directly into the atmosphere, such as the Carbon compounds(CO,CA,CHI,and Vics), Nitrogen compounds(NO,NON,and NH), Sulfur compounds(HAS and SIS), Halogen compounds(chlorides, fluorides, and bromides), and Particulate Matter or aerosols. (refer to the table below for Particulate Matter categories). PARTICLE SIZE DESCRIPTION [emailprotected] because small enough to pass completely through the respiratory system and enter into bloodstream < 2. 5 microns PM2. 5, labeled 'fine' in the US < 0. 1 microns PMO. I, labeled 'ultrafine' table constructed by using information from : http://mvw. aiha. org/abs05/ pol 05. htm and http://wvvw. greenfacts. org/glossary/pqrs/PM1 0-PM2. 5- PMo. 1. htm ) Whereas, secondary pollutants are formed in the atmosphere from the primary pollutants (precursors). The examples of those are NON and HON. (from NO), Ozone,03 (from photochemical reactions of nitrogen oxides and Voss), sulfuric acid droplets (from SIS) and nitric acid droplets (from NON), sulfates aerosols (from sulfuric acid droplets + NH ) , nitrates aerosols (from nitric acid droplets + NH) and organic aerosols formed from Voss in gas-to- article reaction. Acid rain is a result of the wet and dry deposition of these pollutants. In the following page, the health effects imposed by these pollutants are discussed. However, this primary and secondary pollutants are now divided into a smaller scope, namely outdoor and indoor pollutants.

Essay on Cold War

Essay on Cold War Essay on Cold War Essay on Cold WarThe Cold War started because of the possible threat of the expansion of Communism across the world. Actually, the Cold War could be defined as an international conflict. The imperialistic circles were against the success of the Soviet power caused by Communist ideology.   In other words, the imperialistic states joined their forces to fight against Soviet ideology (Hawksworth et al., 2010). The Cold War developed over its first three decades, influencing various international-related issues, including the economic, social and cultural issues. For example, the War Powers Act allowed the President to use military force for up to ninety days without seeking congressional power and authority (United States Congress, 1973). It changed the institution of the presidency, influencing foreign policy making. Different presidential administrations, from Truman to Nixon effectively handled Cold War affairs. Truman developed the proper policies to handle various domestic issues , such as the control over prices, housing problems, the control over nuclear weapons, etc. Actually, Truman managed to change the U.S. strategy toward the expansion of the Soviet ideology through the use of atomic blackmail and his decision to confront Stalinism. Nixon made a decision to change foreign policy reestablishing social relations with PRC. He said, â€Å"Here in America, we are fortunate that most of our people have not only the blessings of liberty but also the means to live full and good and, by the worlds standards, even abundant lives† (Nixon, 1974). These approaches affected foreign policy in different ways. The presidents began to exercise greater level of control over foreign policy. The war and treaty making powers of the presidents were growing. The Cold War led to changes within American society and culture, creating positive environment for developing national identity, considerable changes in demographics, the spread of anticommunist ideology, etc.

Frederick Douglass, Independence Day Speech Essay

Frederick Douglass, Independence Day Speech - Essay Example Douglass, applauds the crowd for celebrating the fourth of July, and reminds them that the nation is still young to embrace a positive change. He also acknowledges efforts of American Revolutionaries in their quest to fight for their freedom against the legal bondage under British rule. He considers anti-slavery a just, reasonable and patriotic stance for future generations to come, and not a politically affiliated cause. In the speech, signers of the Declaration of Independence are praised for their patriotic efforts to put a country’s interests above their own. However, Douglass advices and urges listeners to strive to continue the work of these great revolutionaries who brought with them democracy and freedom to their great land. On the other hand, Douglass shuns American black slavery, and condemns the pretense of Americans for being untrue to the principles, both past and present, of the founders. He retorts by saying that some people find favor in imposing slavery to others yet they cannot be in a position to be slaves themselves. Douglass considers this as a non-divine, inhumane act, which is cruel in God’s eyes. In addition, he also shuns the America ministers and churches for remaining silent and acquiescing towards existence of slavery. He notes that the church in this case is superlatively guilty in its right sense. In conclusion, Douglass is optimistic that pro-slavery forces will be eventually concurred by anti-slavery sentiments. He stresses the arrival of freedom, and the abolitionists promise to fight slavery, whatever the