The effects of internal and external effects on surface morphology were compared

Energy source of internal force action: from the earth itself (the heat energy inside the earth). Main manifestations: crustal movement, magmatic activity, metamorphism, the impact of earthquake on the surface morphology: building the crust, making the crust uplift or depression, forming mountains or basins, controlling the basic surface morphology. Energy source of external force action: from the earth

What are the effects of land surface changes? Can you give some examples to show that the terrain is changing?

Weathering, terrestrial water, ocean and lake, wind and diagenesis. Liangtian to desert, Xinjiang devil City, Three Gorges, etc

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