Describe the four natural forces that can cause erosion. how do they work? explain your answer in at least three sentences.

Water: it can wash things out. depending on the strength it can reform islands or other things.
Wind: it can blow around fine particles of the earth, overtime it creates a new shape to the land.
Sand: when blown in a desert the sand mounds will change shape, however it can erode rocks too, its a slow process though.
Fire: it obviously burns things down. when burning trees fall if they don't burn completely they will remain. over time new plant life will grow over the tree forming a new shape.

Answer (d) the greenhouse effect is primarily caused by car and trucks;

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