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Ch.3
There are 4 sections in ch.3
| Question | Answer |
|---|---|
| Natural resource | Anything in the environment that is used by people |
| Renewable Resources | A resource that is either always available or are naturally replaced in a relatively short time |
| Nonrenewable Resources | Natural resources that are not replaced in a useful time frame |
| Pollution | The contamination of Earth's land,water,or air |
| Environmental Science | The study of natural proceses in the environment and how humans can affect them |
| Clear-Cutting | The process of cutting down all the trees in an area at once |
| Selective cutting | Cutting down only some trees in a forest and leaving a mix of tree sizes and specis behind |
| Sustainable Yield | An amount of renewable resource that can be harvested reglarly without reducing the future supply |
| Fishery | An are with a large population of valuable ocean organisms |
| Aquaculture | The practice of raising fish and water-dwelling organisms for food |
| Biodiversity | The number of different species in an area |
| Keystone Species | A species that influences the survival of many other species in an ecosystem |
| Genes | A structure in an organisms cells that carries its hereditary information |
| Extinction | The disappearance of all members of a species from Earth |
| Endangered Species | A species in danger of becoming extinct in the near future |
| Threatened Species | A species that could become endangered in the near future |
| Habitat Destruction | The loss of a natural habitat |
| Habitat Fragmentation | The breaking of a habitat into smaller isolated pieces |
| Poaching | Illegal killing or removal of wildlife from their habitats |
| Taxol | A chemical in Pacific yew tree bark that has cancer fighting properties |
| Captive Breeding | The mating of animals in zoos or wildlife preserves |
Created by:
levans
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