美国克拉克大学essay代写：Urbanization

由于巨大的森林砍伐和其他土壤退化活动，城市化导致生态系统退化。由于城市发展和其他可能产生广泛和长期负面后果的人类活动，地球的景观发生了变化。早些时候，野生动物共享的农业用地被指定为森林形式的栖息地，由于城市化和森林砍伐现在不再存在，导致土壤侵蚀，也受到政府政策的影响。内陆和沿海水体受到农田径流的影响。城市发展导致全世界对人类健康，农业土地生产力和海洋生物多样性的威胁。当森林被用于城市化时，它增加了土壤侵蚀的机会，大气中的二氧化碳和洪水的可能性。它改变甚至消除了地球的植被覆盖，导致大气中二氧化碳浓度增加，热量捕获气体的变化，甚至导致局部，全球和区域气候变化随能量平衡的变化而变化在地球表面。城市发展的剩余物含有丰富的沉积物和有毒污染物，这些污染物会耗尽土壤的顶层，使其不适合农业用途。

美国克拉克大学essay代写：Urbanization

Urbanization leads to the degradation of ecosystems because of immense deforestation and other soil degradation activities. The landscape of earth is altered because of urban development and other human activities which can have wide and long term negative consequences. Earlier the agricultural land was shared by wildlife specifies  as their habitat in the form of forests which now no longer exists due to urbanization and deforestation and resulted in soil erosion and is also influenced by governmental policies. The inland and costal water bodies are affected by the runoffs from agricultural lands. Urban development leads to threats to human health, productivity of agricultural lands and biodiversity of marine life all over the world. When forests are used for urbanization, it increases chances of soil erosion, carbon –dioxide in the atmosphere and chances of floods. It alters and even removes the earth’s vegetative cover and results in increasing the degree of concentration of carbon dioxide in the atmosphere, changes in the heat trapping gases and even leads to changes in the local, global and regional climatic changes with changes in the energy balance on the surface of the earth. The leftovers of urban development are rich in sediments and toxic contaminants which can deplete the top layer of the soil and make it unsuitable for agricultural purposes.