| A | B |
|---|
| succession | A gradual change in an ecosystem,sometimes occurring over hundreds of years |
| pioner plants | The first plants to invade an area |
| climax community | The last stage of succession |
| pollution | Waste products that damage an ecosystem |
| acid rain | Precipitation resulting from pollution condensing into clouds and falling to Earth |
| conserving | The saving or protecting of resources |
| reduce | To cut down on the use of resources |
| reuse | To use items again, sometimes for a different purpose |
| recycle | To recover a resource from an item and use the recovered resource to make a new item |
| reclamation | The process of restoring a damaged ecosystem |
| wetlands | The water ecosystems that include saltwater marshes,mangrove swamps,and mud flats |
