A. What Causes Soil Erosion B. The Importance of Afforestation C. Rain Erosion and Wind Erosion D. Erosion and the Ways to Fight against E. rosion 相关知识点: 试题来源: 解析 D [分析] 标题概括题。本文主要叙述了水土流失和防备水土流失的方法。反馈...
The reasons for the changes are complex.It is clear that pollution of the air and water by factories is affecting the environment.Trees and other vegetation die,and so soil is eroded.the more trees that die,the less water is held in the earth.the need for wood for fuel...
The removal of subsidies also stopped land-clearing and over-stocking, which in the past had been the principal causes of erosion, Farms began to diversify, The one kind of subsidy whose removal appeared to have been bad for the environment was the subsidy to manage soil 请帮忙给出正确答案和...
Rapid runoff causes soil erosion as well as sediment (沉淀物) deposition problems downstream(下游). Spawning(产卵) grounds for fish and other wildlife habitat are often destroyed. High-velocity currents increase flood damage; prolonged high floods delay traffic and interfere with drainage and economic...
utilization change causes the pad surface water strength characteristic, the soil ingredient and so on to occur changes (15), has affected the surface amount of runoff change, and has affected the soil erosion intensity and enters the lake nutrient salt the load, ecology and so on for[...
aYou are attempting to access Dungeon Fighter Online from outside of our service area, which includes the United States and Canada only. You will not be able to Start the game. 您试图访问土牢战斗机在网上从境外我们的服务区域,包括仅美国和加拿大。 您不会能开始比赛。[translate]...
What causes sedimentary rocks to fold? Why are aquifers in karst regions often toxic? Ocean currents are produced by what two processes? Explain how excavating sediments reveals an ordered series of fossils. What describes the maximum sediment load that can be transported by a stream? W...
aThe code in then-statement must not have any side effects, other than to set variables that are also set in else-statement. 代码在然后声明不能有任何副作用,除之外设置在声明也被设置的可变物。[translate] a自1990年均土壤侵蚀净变化最大 Only changed from 1990 yearly average soil erosion in a ...
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An ocean is a large body of salt water that covers a significant portion of the Earth's surface. Its vast expanse of interconnected water is characterized by its depth and immense size. Oceans are essential components of...