Provided
Praise be to Allah, prayer and peace be upon His Messengers ..
At the outset we would like to explain why our choice of this particular subject to write it when we saw the state of the environment on progress in this wide world in general and especially our municipality. Have spread disease and many children died because of environmental pollution.
So we like to discuss this longstanding and pose solutions that we see fit. It may be beneficial to the reader when read. Nerj
Chapter I:
A - the definition of pollution:
He knew where the pollution in different ways: that pollution is the development of materials in other appropriate ********s or that pollution of the environment (intentional or unintentional) with human excrement.
There are some definitions most detailed and accurate, such as the definition and Holstr Portoz, identified a comprehensive definition of pollution through the definition of pollution, polluter is a substance or effect leads to a change in the rate of growth species into the environment contrary to the toxins enter the food chain or contrary to the health or comfort or with the values of society.
And the intervention of contaminants to the environment in significant quantities of material in the form of waste and litter or spin-offs from industries or certain activities of man and usually involves pollution to dissipate energy (thermal, acoustic or vibration) and, in general, the pollution damage the vital functions of class (Biosphere) that surround the globe ... and this damage can be summarized as follows:
1 - harm to human health through pollution of air, soil, food, chemicals and other radioactive materials.
2 - damage to crops and plants, water, soil and animals.
3 - damage to the aesthetic aspects of the environment such as smoke, dust, noise and waste and garbage.
4 - damage that can not be felt only in the long run, but having a cumulative impact, such as cancers (materials that lead to cancer), radioactive materials and noise.
B - Types of pollution:
1 - food contamination:
Resulted in the overuse of agricultural fertilizers and pesticides to a number of adverse health and economic food for human consumption, and grew up as a result of the food contamination.
2 - Air pollution:
Air pollution occurs from different sources, which may be natural or the various activities of man, Vatabieip such as: storms and thunders and rain, earthquakes and floods. And contribute to the bulk of the rights of air pollution by sewage, waste and industrial waste, agricultural, medical and oil and petroleum products, pesticides and fertilizers, radioactive materials , and this might cause many damages to the ecosystem.
3 - Water pollution:
Down to the ground water in the form of pure, free of microbial pathogens or other contaminants, but as a result of the massive industrial development subject to several problems which turn into water unfit for drinking and consumption. One of the most examples of contamination of water including rain launched factory fumes and gases, As a result, created the so-called acid rain. The contaminated water in many different pollutants Vilut For example, remnants of sanitation and various chemical detergents and some mineral elements such as: lead, mercury, phosphates and nitrates, chlorine and oil.
4 - radioactive contamination:
Cause rights in air pollution differs from the known contaminants, a radioactive contamination, which is at present the most serious environmental pollutants. May show the impact of this pollution is rapidly and surprise on the organism, and it may take a long time to appear in future generations, and since the Second World War and so far present a person could use the radioactive materials in the production of dangerous nuclear and hydrogen bombs.
5 - ****l pollution:
The problem of pollution of toxic mineral elements in the present time the most important problems facing professionals in the field of environment, so they are of extreme health damage to human health. This problem was exacerbated as a result of the rapid development in various industrial fields, for example, the proportion of carbon monoxide in the air. The element of lead have been observed increase constantly as a result of the burning of many fuels and vehicles.
6 - Noise:
Increase the intensity of noise in the modern world significantly, no longer limited to major cities and industrial zones, but arrived to the countryside, and a person can make a noise through the establishment of methods to modern cars, railways, aircraft and agricultural machinery industry. And did not hand over the homes of noise when he mocked rights all means of modern technology for the well-being of radio, television, cleaning tools, kitchen utensils, etc., in other words, the noise has invaded the few remaining ****ters for silence in the world. And perhaps even the end of this century will not find any room still exists to turn to if he wants to escape to a quiet spot.
There are many types of pollutants, the countless other in the world.
Chapter II
::1 - Pollution Damage
A - Air pollution: air pollution contributed to the spread of many bacteria that cause diseases of people, including: influenza, the deadly epidemic diseases that spread quickly in the middle of the environment and disease, anthrax and plague, cholera, smallpox and fever, as well as incidences of human poisoning due to the effects of harmful compounds volatile arsenic as a result of microbial activity of some fungal species, as a major impact on the ozone layer and destroyed.
B - water pollution: the most important water pollution damages health, sanitation remnants of which have a number of pathogens such as certain bacterial species and fungal and viral diseases. The result of water pollution to the poisoning of marine organisms, and become part of the oil to eat small balls by fish, thus impacting directly on the food chain and cause water pollution, micro-organisms to the occurrence of many diseases such as typhoid fever, polio virus, as well as parasites.
C - radioactive contamination: the most important diseases to humans because of the emergence of radiation skin redness or blackening of the eye, atrophy also occurs in the cells of the bone marrow and collapsed in germ cells, also show some effects at a late stage of human life, such as leukemia and cancer of the thyroid White thyroid and lung cancer, leading to a decrease in white blood cells and intestinal infections and to reach beyond the risks to plants, fish, birds, leading to upset the ecological balance, and damage the food chain.
A) Soil
Continued vegetation clearance and erosion have limited the area of fertile brown soils to those uplands where evergreen oak forests are still found. Mediterranean red soils occupy the lower elevations in much of the northern Tell. Farther south the soils become progressively immature as aridity increases; they are characterized by little chemical weathering or accumulation of organic matter. In the desert areas soil development is further impeded by strong and nearly constant wind erosion. An ambitious project was initiated in the mid-1970s to create a “green barrier” against Saharan encroachment northward, reforesting a narrow strip up to 12 miles (19 km) in width and some 1,000 miles (1,600 km) in length; it proved only somewhat successful. Another plan, however, was introduced in the mid-1980s to reforest an additional 1,400 square miles (3,600 square km).
B) Water
Most of the rivers of the Tell Atlas are short and undergo large variations in flow. The largest river is the Chlef, which rises in the High Plateau, crosses the Tell Atlas, and flows through an east-west trough to reach the sea east of Mostaganem. The Chlef has been so intensively exploited for irrigation and drinking water that it has ceased to flow in its lower reaches during the summer months. South of the Tell Atlas there are only ephemeral rivers (wadis), and much surface runoff ends in chotts (salt marshes) within inland depressions. Several Saharan watercourses, in particular those flowing off the Ahaggar uplands, occupy valleys formed largely during pluvial periods in the Pleistocene Epoch (1,800,000 to 10,000 years ago). Some southward-flowing wadis feed the water tables beneath the Saharan surface, and desert oases appear in ********s where the water, under hydrostatic pressure, rises to the surface in artesian wells or springs.
C) Wild life & open spaces
The animal life of the northern mountains includes wild mouflons, Barbary deer, wild boars, and Barbary macaques. A multitude of migratory birds pass through the country, including storks and flamingos. In the Sahara, gazelles, fennecs, hyenas, and jackals can be found, together with many smaller mammals such as gerbils and desert hare. Insect life is abundant and is most spectacularly manifested in the region's periodic massive swarms of locusts. Scorpions are common in the arid and semiarid regions.
D) Mineral resources
Extensive deposits of sulfur-free light crude oil were discovered in the Algerian Sahara in the mid-1950s. Production began in 1958, concentrated in three main fields: Hassi Messaoud, in the northeastern part of the Sahara; Zarzaïtine-Edjeleh, along the Libyan border; and El-Borma, on the Tunisian border. Deposits of natural gas were first discovered at Hassi R'Mel in 1956, and since then discoveries have also been made at several other fields. Algeria ranks fifth in the world in terms of total gas reserves and second in gas exports. The gas has a methane ******* of more than 80 percent and also contains ethane, propane, and helium.
The main mining centers are at Ouenza and Djebel Onk near the eastern border with Tunisia and at El-Abed in the west. Extensive deposits of high-grade iron ore are worked at Ouenza, and major deposits of medium-grade ore exist at Gara Djebilet near Tindouf. Nearly all the high-grade iron ore from the open-cut works at Ouenza is used to supply the domestic steel industry. Reserves of nonferrous ****l ores are smaller and more scattered. These include sizable quantities of zinc and lead at El-Abed near Tlemcen—the source of most of the country's production—and of mercury ore at Azzaba. However, it is estimated that the zinc will be depleted in the early 21st century. Phosphate deposits of relatively inferior grade are mined south of Tébessa at Djebel Onk. About one-third of this supplies the Annaba fertilizer complex, but the remainder is exported as raw material. Overall phosphate production declined by the mid-1990s.Intensive prospecting for minerals in the Ahaggar Mountains has been carried out, and traces of tin, nickel, cobalt, chrome, and uranium have been found. Development of the Ahaggar uranium deposits began in the early 1980s. There are also sizable kaolin deposits at Djebel Debar and large reserves of marble at Djebel Filfila near Skikda.
E) Monuments
The General Command of the Algerian National Gendarmerie program information Introduced to the protection of monuments and historical legacies in Algeria
II) Human resources
A) Health
Because of the country's relatively young population and pressing medical needs, the health care system is oriented toward preventive medicine rather than treatment. Instead of building expensive hospitals, Algeria emphasizes smaller clinics and health centers and maintains a comprehensive vaccination program. Medical care, including medication, is provided by the state without charge, although those earning middle and higher incomes pay a part of their medical fees on a proportional scale. There is an increasing trend toward private health care. In an effort to extend health care to everyone, the government requires all newly qualified physicians, dentists, and pharmacists to work in public health for at least five years.
B) Education
Since independence Algerian authorities have worked on redesigning the national educational system. Particular attention has been given to replacing French with Arabic as the ******** of instruction and to emphasizing scientific and technical studies. Education in Arabic is officially compulsory for all children between 6 and 15 years of age, and roughly nine-tenths of boys of that age are in school; enrollment for girls is slightly lower. Children residing in rural areas have remained underrepresented in the classroom, although much progress for both groups has been made since independence. The literacy rate is about three-fourths for men but less than half for women. The educational system has experienced extreme difficulty in trying to accommodate the increasing number of school-age children. The scarcity of qualified Arabic teachers has been ameliorated by the recruitment of teachers from other Arab countries.
C) Culture
Algerian culture and society were profoundly affected by 130 years of colonial rule, by the bitter independence struggle, and by the subsequent broad mobilization policies of post independence regimes. A transient, nearly rootless society has emerged, whose cultural continuity has been deeply undermined. Seemingly, only deep religious faith and belief in the nation's populist ideology have prevented complete social disintegration. There has been a contradiction, however, between the government's various populist policies—which have called for the radical modernization of society as well as the cultivation of the country's Arab Islamic heritage—and traditional family structure. Although Algeria's cities have become centers for this cultural confrontation, even remote areas of the countryside have seen the state take on roles traditionally filled by the extended family or clan.
D) Economy
Algeria's economy is dominated by its export trade in petroleum and natural gas, commodities that, despite fluctuations in world prices, annually contribute roughly one-third of the country's gross domestic product (GDP). Until 1962 the economy was based largely on agriculture and complemented France's economy. Since then the extraction and production of hydrocarbons have been the most important activity and have facilitated rapid industrialization. The Algerian government instituted a centrally planned economy within a state socialist system in the first two decades after independence, nationalizing major industries and implementing multiyear economic plans. However, since the early 1980s the focus has shifted toward privatization, and Algeria's socialist direction has been modified somewhat
هذا هو البحث كله ارجو الاستفادة
( تقرير عن مشاركة سيئة )، و الموجودة أسفل كل مشاركة .
2014-01-19, 21:17
أرجو المساعدة في مشروع اللغة الانجليزية و لو بفكرة صغيرة
العرض العادي
