5129908
Description
Flashcards by Ashley Hay, updated more than 1 year ago
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Created by Ashley Hay
over 8 years ago
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| Question | Answer |
| tragedy of the commons | tendency of a shared, limited resource to become depleted b/c people act in self-interest for short term gain |
| clear-cutting | removing all or almost all of the trees within an area |
| selective cutting | removing single trees or a relatively small number of trees from among many in a forest - less environmental impact than clear-cutting |
| ecologically sustainable forestry | an approach to removing trees in forests in ways that don't unduly affect the viability of other trees |
| prescribed burn | fire that's deliberately set under controlled conditions to reduce the accumulation of dead biomass on a forest floor |
| wildlife refuge | federal public land, purpose to protect wildlife |
| wilderness area | area set aside to preserve a large tract of intact ecosystem or a landscape |
| NEPA (National Environmental Policy Act) | mandates an environmental assessment of all projects involving federal money or land grants (1969) |
| Endangered Species Act | designed to protect species from extinction (1973) |
| urban sprawl | urbanized areas that spread into rural areas, removing clear boundaries between the two |
| urban blight | degradation of the built and social environments of the city that often accompanies / accelerates migration to the suburbs (aka: reason people move out) |
| smart growth | set of principles for community planning, strategies to encourage development of sustainable, healthy communities 1. mixed land uses 2. range of housing options and choices 3. walkable neighborhoods 4. collaboration in development decisions 5. compact building design 6. distinctive, strong sense of place 7. open space, natural beauty, farmland 8. variety of transportation 9. strengthen existing communities 10. development decisions = predictable, fair, & cost-effective |
| food security vs. insecurity | security: access to sufficient, safe, nutritious food that meets dietary needs insecurity: people don't have adequate access to food |
| malnutrition | diet lacks correct balance or proteins, carbs, vitamins, & minerals |
| undernutrition | not enough calories ingested to maintain health |
| overnutrition | too many calories and a lack of balance of foods and nutrients |
| famine | food insecurity is so extreme that large number of deaths occur in a given area over a relatively short period |
| green revolution | 1900s shift in agricultural practices- new management techniques, mechanization, fertilization, irrigation - resulted in increased food output |
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