take location by fewest once in Hexi Corridor

The sixth category of environmental protection who started writing essay book navigate (versed ecology)
essay topic
Earth since its inception, has been 4.6 billion years,toronto escort, 46 million years long years, it created such a fine spring daytime today, a better earth mm human life world. However, as intelligent people do stupid actually damage the environment survival; protective woods deforestation, indiscriminate annihilating of wild animals, fishing, blind exploitation of underground mines, indiscriminate dismiss of industrial wastewater hh So Oasis disappeared, taint erosion, and desertification, and wrong climate, the ecological imbalance of the hh environmental pollution and ecological damage have become major issues of world concern. Today, people discovered that resulting in habitat of wild
alternatively habitat detriment and deterioration of living conditions, paired with the damage of people fishing and hounding wild beasts, numerous of the world's species of wild plants and animals have become extinct alternatively jeopardized.
International IUCN Endangered Species published in 1996, approximately 10,000 kinds of woody plants, the endangered species of about 6%, of which about 1000 species in peril. every 24 hours there are 150 to 200 kinds of biological species never chaptering the earth, along to file shows that the current rate of species extinction on Earth formed faster than 100 times. China is a country very rich wildlife, merely the variety of China is facing a caustic menace. angiosperms, there are 1,000 kinds of endangered species, 28 species of critically endangered species; gymnosperms 63 endangered species, 14 species of critically endangered species, 1 species have become extinct; vertebrates there are 433 intimidated.
7, familiar with the dust
storm, also known for black storm, occurred in a abandon area kinds of normal phenomena. a massive number of desert dirt, the sand is the source of dust storms, sandstorms in spring with a coerce winds.
the quondam centenary, due to people over-reclamation, overgrazing, deforestation, the plant was severe break to large tracts of land into bare land, with the accelerating desertification, dust storms have gradually distended the coverage, the amplitude of dust storms have gradually additional the spring of .2000, the capital of Beijing eight consecutive attacks were sandstorms. According to scientists calculated in a grassland, scraping away the topsoil 18 cm thick, about 2000 years time; such as the grasslands into farmland, fair 49 years; if bare land, fair 18 years. from the dust of the Origin and Development point of outlook, the erasure of the environment, breaking the vegetation is the maximum essential causes of dust storms. merely to protect the vegetation, to discourage land desertification, dust storms can truly decrease the harm.
dust storms in China Yu acted the misadventure tin be said namely pang. According to the experts Statistics From 1952 to 1993, the Northwest district of the frequency of dust storms is: 50 years 5, 60 years 8, 70 13, 80, on behalf of 14; in 1993 there was a drastic black tempest events. After , April and May every year, take area at least once in Hexi Corridor, and in 2000, namely a row 8 times. According to the authoritative experts in 10m20 years, the face of increasing population, the ecological context has chance increasingly deteriorating location, If effective measures are not taken, China's dust storm frequency, intensity and degree of damage may be exacerbated still beyond. (b) writing
1. logical dialectical remark.
among environmental protection and social evolution there contradictions,right .., properly deal the conflicting absences of the rational thinking of pros and cons, nice rational thinking of problems students can present a number of universal environmental issues of their own views and minds. hold views which are likely, by the time makes sense. But have to be explicit, environmental protection and economy evolution should be nape and nape. Without economic development, environmental protection can not be implemented; and Zhigu economic development,toronto escorts, is not aware of environmental protection, and because humans is undoubtedly a suicide. in writing to disburse consideration to the dialectical look at.
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Keywords: composition
Date: summer reading stars Next: September 16, 2009