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4B ch 2 & 3
| Term | Definition |
|---|---|
| humus | The rotting plant and animal materials in topsoil. |
| fertile | Soil that has the nutrients to grow many plants. |
| terracing | A farming method used on steep hillsides to control erosion. |
| erosion | The process by which wind and moving water carry away bits of rock. |
| strip cropping | The practice of planting one or more crops between rows of other crops to control erosion. |
| contour plowing | Plowing around a hill to reduce erosion. |
| soil conservation | The saving of soil. |
| weathering | The process by which rocks are broken down into smaller pieces. |
| preservation | The protection of an area |
| conservation | The careful management and wise use of natural resources |
| reclamation | The repairing of some of the damage to an ecosystem. |
| succession | The process that gradually changes an existing ecosystem into another ecosystem |