Terms : Hide Images
| 12463291485 | Physical weathering | The mechanical breakdown of rocks and minerals. | 0 | |
| 12463291486 | Chemical weathering | The breakdown of rocks and minerals by chemical reactions, the dissolving of chemical elements from rocks, or both. | 1 | |
| 12463291487 | Acid precipitation | Precipitation high in sulfuric acid and nitric acid from reactions between water vapor, sulfur, and nitrogen oxides in the atmosphere. | 2 | |
| 12463291488 | Erosion | The physical removal of rock fragments from a landscape or ecosystem. | 3 | |
| 12463291489 | Parent material | Rock underlying soil; the material from which the inorganic components of a soil are derived. | 4 | |
| 12463291490 | Soil degradation | The loss of some or all of a soil's ability to support plant growth. | 5 | |
| 12463291491 | Horizon | A horizontal layer in a soil defined by distinctive physical features such as texture and color. | 6 | |
| 12463291492 | O horizon | The organic horizon at the surface of many soils, composed of organic detritus in various stages of decomposition. | 7 | |
| 12463291493 | A horizon | Frequently the top layer of soil, characterized by mixing of organic material and mineral material. | 8 | |
| 12463291494 | E horizon | The zone of leaching that forms under the O horizon or, less often, the A horizon. | 9 | |
| 12463291495 | B horizon | Frequently the second major soil horizon, composed primarily of mineral material with very little organic matter. | 10 | |
| 12463291496 | C horizon | The least-weathered soil horizon, which always occurs beneath the B horizon and is similar to the parent material. | 11 | |
| 12463291497 | CEC of a soil | The ability of a particular soil to absorb and release cations. | 12 | |
| 12463291498 | Base saturation | The proportion of soil bases to soil acids, expressed as a percentage. | 13 | |
| 12463291499 | Native species | A species that occurs naturally within a region, either evolving there or arriving and becoming established without human assistance | 14 | |
| 12463291500 | Exotic species | An introduced species living outside its native habitat, which has arrived there by human activity, either deliberate or accidental. | 15 | |
| 12463291501 | Invasive species | an organism (plant, animal, fungus, or bacterium) that is not native and has negative effects on our economy, our environment, or our health. | 16 | |
| 12463291502 | Habitat loss | The process in which natural habitat is rendered functionally unable to support the species present. | 17 | |
| 12463291503 | Habitat fragmentation | The process by which habitat loss results in the division of large, continuous habitats into smaller, more isolated remnants. | 18 | |
| 12463291504 | Lacey Act | A U.S. act that prohibits interstate shipping of all illegally harvested plants and animals. | 19 | |
| 12463291505 | CITES | A 1973 treaty formed to control the international trade of threatened plants and animals. (Stands for Convention on International Trade in Endangered Species of Wild Fauna and Flora) | 20 | |
| 12463291506 | IUCN Red List | The world's most comprehensive inventory of the global conservation status of biological species. | 21 | |
| 12463291507 | Marine Mammal Protection Act | A 1972 U.S. act to protect declining populations of marine mammals. | 22 | |
| 12463291508 | Convention on Biological Diversity | A 1992 international treaty formed to help protect biodiversity. | 23 | |
| 12463291509 | Edge Habitat | The intersection of two different habitat types | 24 | |
| 12463291510 | Biosphere reserve | A protected area consisting of zones that vary in the amount of permissible human impact. | 25 | |
| 12463291511 | Habitat corridor | An area of habitat connecting wildlife populations separated by human activities or structures | 26 | |
| 12463291512 | Debt for nature swap | A transaction in which a foreign exchange debt owed by a developing country is transferred to another organization on the condition that the country use local currency for a designated purpose, usually environmental protection. | 27 |
