| A | B |
|---|
| aquaculture | the practice of raising fish and other water-dwelling organisms for food |
| fishery | an area with a large population of valuable ocean organisms |
| sustainable yield | an amount of renewable resource that can be harvested regularly without reducing the future supply |
| selective cutting | cutting down only some trees in a forest and leaving a mix of tree sizes and species behind |
| clear-cutting | the process of cutting down all the trees in an area at once |
| pollution | the contamination of earth's land, water or air |
| environmental science | the study of natural processes in the environment and how humans can affect them |
| natural resource | anything in the environment that can be used by people |
| renewable resource | a resource that is either always available or is naturally replaced in a relatively short time |
| nonrenewable resource | resources such as coal or oil that are not replaced in a useful time |
