| A | B |
| resources that nature can produce again and again in a relatively short period of time | renewable resource (ex: fossil fuels) |
| resources that nature can not replace quickly enough to meet people's needs | nonrenewable resource (ex: fossil fuel) |
| fuels formed in the ground from the remains of dead plants and animals | fossil fuels (ex: gas, oil) |
| resources that are never used up as they are being used | inexhaustible resource (sunlight) |
| a natural force that helps build up parts of the earth | constructive force |
| a natural force that tears apart parts of the earth | destructive force |
| depositing sediment in a new location | deposition |
| the movement of weathered material by water, wind, or ice | erosion |