教師資格考試大綱英語學(xué)科知識與教學(xué)能力(高級中學(xué))-文庫吧資料
2025-04-10 00:52本頁面
【正文】 been defacing the earth, making scars upon the land. The throngs of people who responded to the lure of gold in the Yukon totally stripped mountainsides of trees above the Yukon River to make rafts in order to sail 500 miles to Dawson. Forty percent never made it! In the populated areas of the Himalayas very few trees remain since the citizens have cut them down for cooking and heating fires. With most of the trees gone, erosion occurs on a large scale, washing away most of the topsoil, making food production difficult. Even more disturbing is the fact that, due to largescale cutting, the famous cedars of Lebanon, mentioned in the Bible, no longer exist. Along the same lines, so much of the rain forest in Panama is being destroyed that scientists are predicting the Panama Canal could fill with silt, thus prohibiting ships from crossing the isthmus, due to the effects of deforestation.Deforestation and erosion, along with changing weather patterns, have led to the fastestgrowing regions on this planet—deserts. All the while, populations are exploding worldwide and the proliferation of deserts means there is less arable land to feed the increasing number of people. Starvation on a massive scale will run rampant, and whenever a noted ecologist or environmentalist sends out warnings about such dangers to human life, very few consider giving up any of their conveniences. For instance, they insist on using aerosols and traveling onetoacar, thus adding to the emissions, which cause the ozone holes to expand, leading to more cases of skin cancer—a vicious cycle, indeed.To make matters even more critical, global warming is being an everincreasing threat to the existence of humans and animals. Polar icecaps are melting, and sections, the size of the state of Rhode Island, are breaking off. Traveling toward the Temperate Zones, they begin to melt, placing an inordinate amount of fresh water into the oceans and causing an imbalance. Humans further plicate their lives by allowing businesses to release pollutants in urban areas, in the name of profit. “Accidents” often take place at
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