| Term | Definition |
| development | the construction of buildings, roads, bridges, dams, and other structures |
| mining | the removal of nonrenewable resources from the land |
| litter | the very top layer of soil composed of dead leaves and grass |
| topsoil | a mixture of rock fragments, nutrients, water, air, and decaying animal and plant matter |
| subsoil | below the topsoil consisting mostly of rock fragments, water and air, but less animal and plant matter than topsoil |
| bedrock | rock that makes up the Earth's crust |
| erosion | the process by which water, wind, or ice moves particles of rocks or soil |
| crop rotation | planting a different crop in a field each year to help prevent nutrient depletion |
| desertification | the advancement of desertlike conditions into areas that were previously fertile |
| land reclamation | the process of restoring an area of land to a more natural, productive state |
| municipal solid waste | the waste materials produced in homes, businesses, schools, and other places in a community |
| recycling | the process of reclaiming raw materials and reusing them |
| biodegradable | can be broken down and recycled by bacteria and other decomposers |
| hazardous waste | any material that can be harmful to human health or the environment if it is not properly disposed of |