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Grade 5 B-4 Sci. Def
Chapter 4 Protecting and Preserving Ecosystems
Term | Definition |
---|---|
succession | A gradual change in an ecosystem, sometimes occurring over hundreds of years |
pioneer plants | The first plants to invade a bare 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; some times for a different purpose |
recycle | Recovering a resource from an item and using 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 |