geology - study of the forces that shaped the earth, astronomy - a study of the solar system, stars, and galaxies, biosphere - part of the earth that includes all living things, cryosphere - system that includes all of the frozen water on earth, meteorology - study of conditions in the atmosphere, hydrosphere - system that contains al the liquid water on earth, constructive force - shapes the earth's surface by building mountains and landmasses, destructive forces - forces that wear away mountains and other features on earth,

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