Wind, water, air, ice and heat all

Wind, water, air, ice and heat all work to cause erosion. As the wind blows over the land, it often picks up small grains of sand. When these grains of sand strike against solid rocks, the rocks are slowly worn away. In this way, even very hard rocks are worn away by the wind.
When particles of rocks or soil became loosened in any way, running water carries them down the hillsides. Some rocks and soil particles are carried into streams and then into the sea.
Land that is covered with trees, grass and other plants wears away very slowly, and so loses very little of its soil. The roots of plants help to hold the rocks and soil in place. Water that falls on grasslands runs away more slowly than water that falls on bare ground. Thus, forests and grasslands help to slow down erosion.
Even where the land is thickly covered with plants, some erosion goes on. In the spring, the melting snow turns into a large quantity of water that then runs downhill in streams. As a stream carries away some of the soil, the stream bed gets deeper and deeper. After thousands of years of such erosion, wide valleys are often formed.

Kết quả (Anh) 2:

Wind, water, air, ice and heat to cause, all work erosion. As the wind blows over the land, it often Do picks up small grains of sand. These grains of sand When Strike Against solid rocks, the rocks are slowly worn away. In this way, chẵn very hard rocks are worn away by the wind.
When particles of rocks or soil became loosened in any way, carries water running down the hillsides added. Some rocks and soil particles and then streams are Carried Into Into the sea.
Land is covered with mà trees, grass and other plants very slowly wears away, and so loses very little of the its soil. The roots of plants help to hold the rocks and soil in place. That falls on Grasslands Water runs away more slowly coal falls on bare ground water mà. Thus, Grasslands and forests help to slow down erosion.
Even where the land is thickly covered with plants, some erosion goes on. In the spring, the melting snow turns Into a large quantity of water That runs downhill then in streams. As a stream carries away some of the soil, the stream bed gets deeper and deeper. After Thousands of years of erosion vd, wide valleys are often Do formed.