| A | B |
|---|
| Succession | Gradual change in an ecosystem |
| Pioneer Plants | The first plants to invade a bare area |
| Climax Community | The final stage of succession |
| Pollution | Any waste product that damages an ecosystem |
| Acid Rain | Nitric and sulfuric acid condensing into clouds and falling to Earth |
| Conserving | Saving resources |
| Reduce | To cut down on the use of resources |
| Reuse | To keep items that can be used again |
| Recycle | To recover a resource from an item and use it to make a new item |
| Reclamation | Process of restoring a damaged ecosystem |
| Wetlands | Water ecosystems, such as saltwater marshes, mangrove swamps, and mud flats |
