啊速度速度（Speed ah）.docVIP

啊速度速度（Speed ah） Ah, speed, speed,.Txt, to run with joy, to listen attentively to, to use thinking to develop, with the efforts to struggle, with the goal to measure, use love to live. More money, less money, often good! It is better to be young and healthy! His home is rich, harmonious. Pollution of the land by toxic substances, as if suffering from a malignant tumor, cancer cells continue to bite the earths body. In China, 20% of the cultivated land is polluted and suffer from malignant tumor. The direct loss caused by the annual output is equivalent to 1% of the total GDP of the same period. Land pollution is no less harmful than water pollution and air pollution, but people are not so concerned about water pollution and air pollution that they are concerned about land pollution. According to statistics, the country suffered industrial three wastes pollution of cultivated land reached 300 million acres, suffered from fertilizer and pesticide pollution of cultivated land also has more than 200 million acres, two of the total arable land in the country accounted for 20%. During the 85 period, 6 million 700 thousand hectares of cultivated land were seriously polluted. In 1997, only 1057 serious land pollution accidents were recorded by the Ministry of agriculture, and the direct economic losses reached 150 million yuan. Land pollution is the most direct harm is not conducive to the growth of plants, resulting in crop production and the yield, serious pollution of the land may be barren. Not only that, toxic substances are absorbed and accumulated by plants, and then enter the human body through the food chain, and are enriched in the human body, which is very likely to cause poisoning. There are many reasons for the pollution of land, such as malignant tumor. The main culprit is the irrigation of industrial and mining wastewater. Baotou near 164 kinds of toxic substances with day in and day out sewage into the ground, mercilessly devouring the fertile land, 100 thous