Environment pollution


Anglų referatas.

Introduction. Environment pollution. Pollutants classification. The main sources of pollution. Atmospheric pollution. Vechicle pollution. Measures industrial pollution. Acid rain. Atmospheric pollution problems a global. Water pollution. Soil pollution. Direct destruction of soil. Energy and technological environment pollution. Radiatio pollution. Noise. Vibration. Electromagnetic radiation. Thermal pollution. Sumarry. Vocabulary.


Characterized by the latter decades of serious social attitudes to nature and protection of fundamental changes in the values formed in the revaluation. Previously, most environmentalists focused on individual endangered species and the protection of individuals, but significant increase in environmental pollution and natural resources are gradually shifted to a qualitatively new nature conservation policy. The man realized that in order to protect endangered species and to remain the same, in particular the need to protect the species habitat. Increasingly started to use the natural environment, or simply the environment (called - environment) and environmental concepts. Lithuania was the concept of a legally enacted in 1992 adopted by the Environmental Protection Act. This law environment is treated as a „ naturally functioning system, which consists of interrelated natural and man-made components and integrating them in the natural and anthropogenic ecosystems“. Objectives: To get acquainted with the sources of environmental pollution. Their methods of operation and impact on human health. Relevance: This time is particularly timely topic of environmental pollution. Many of the binding of a common goal to reduce pollution levels in order to minimize the loss in humans. Because of our own destiny in our hands ! Thread ahead: • Clarifying the pollution trends; • Access to the breakdown of pollutants; • Figure out how pollutants impact on soil, air and water; • Access to the acid rain; • Access to waste on the environment; • How is the computer IR environment.

1. ENVIRONMENTAL POLLUTION Environmental pollution is a chemical, physical and biological environment and its individual components, change that can adversely affect people and other living organisms and physical environmental components. As far as the adverse impact of natural environmental components usually meant a variety of engineering structures: buildings, monuments and other objects. With regard to the effects of pollutants on living organisms is true that the natural sources of pollution effects on human and other living organisms are adapted and evolutionary significant adverse effects are not, except in localized situations that are considered as natural disasters and adapt to the practical, eg., A volcanic eruption impact on nearby residents and wildlife. To anthropogenic environmental pollutants on human and other living organisms and is neprisitaikę above a certain level of pollution, the polluting substances, the effects could have very negative consequences. Anthropogenic sources are industrial production processes, energy, industry, transport, municipal and household. Combustion processes produce a gas, liquid and solid material falls from chimneys into the atmosphere. 1.1 Pollutant classification Some kind of universally accepted classification of pollutants has not yet and are unlikely to ever be, but according to the above definition of environmental pollution, the whole range of pollutants can be divided primarily into three broad groups: 1) chemical contamination; 2) physical contaminants; 3) biological contaminants. With regard to environmental pollution are usually focuses on chemical contaminants. Chemical contaminants known as chemical compounds and mixtures that are above a certain concentration or exposure time, or they may have adverse effects on humans and other living organisms. It is estimated that the effects of pollutants apytikriaiprilygsta concentration and exposure time multiplied. This means that long-term chronic low concentrations of pollutants can match the impact of short-term effects of high concentrations. In addition, it is important to understand that virtually all of the material at their high concentration of pollutants is. The best example here is the nitrogen compounds that are essential for living organisms for growth and development processes and poverty which is often the main limiting factor for plant growth. However, it is the excess of nitrogen compounds in the environment now is one of the most important environmental problems leading to soil and water eutrophication (permaitinimą) and posing a threat to many natural aquatic and terrestrial ecosystems. Of all the vast diversity of chemical pollutants to be mentioned is the most frequently mentioned groups: 1) carbon, nitrogen and sulfur oxides; 2) solid particles, dust; 3) heavy metals; 4) aromatic hydrocarbons; 5) halogenated hydrocarbons; 6) nutrients (ammonium, nitrates, phosphates, etc..) 7) Petroleum products;

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Environment pollution. (2016 m. Kovo 29 d.). http://www.mokslobaze.lt/environment-pollution.html Peržiūrėta 2016 m. Gruodžio 04 d. 16:25