| A | B |
|---|
| system | a group of parts that work together as a whole |
| energy | the ability to do work |
| hydrosphere | contains all of Earth's water |
| constructive forces | shape the land's surface by building up mountains and other landmasses |
| destructive forces | destory or wear away landmasses through processes like erosion and weathering |
| biosphere | the parts of Earth that contain living organisms |
| atmosphere | is the relatively thin envelope of gases that forms Earth's outermost layer |
| geosphere | has three main parts: a metal core, a solid middle layer, and a rocky outer layer |
