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25 Cards in this Set
- Front
- Back
agriculture
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farming
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monoculture
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practice in which large fields are planted with a single variety year after year
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green revolution
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the development of highly productive crop strains and the use of modern agricultural techniques to increase yields of food crops
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renewable resources
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can regenerate if they are alive or can be replenished by biochemical cycles if they are nonliving
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nonrenewable resource
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one that cannot be replenished by natural processes
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sustainable development
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a way of using natural resources without depleting them and of providing for human needs without causing long-term environmental harm
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soil erosion
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the wearing away of surface soil by water and wind
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desertification
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in areas with dry climates, a process caused by a combination of poor farming practices, overgrazing, and drought that turns productive land into desert
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deforestation
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destruction of forests
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aquaculture
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the raising of aquatic animals for human consumption
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smog
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a mixture of chemicals that occurs as a gray-brown haze in the atmosphere
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pollutant
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a harmful material that can enter the biosphere through the land, air, or water
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acid rain
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rain containing nitric and sulfuric acids
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biodiversity
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the sum total of the genetically based variety of all organisms in the biosphere
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ecosystem diversity
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includes the variety of habitats, communities, and ecological processes in the living world
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species diversity
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the number of different species in the biosphere
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genetic diversity
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the sum total of all the different forms of genetic information carried by all organisms living on Earth today
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extinction
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occurs when a species disappears from all or part of its range
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engandered species
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a species whose population size is declining in a way that places it in danger of extinction
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habitat fragmentation
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when development splits ecosystems into pieces
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biological magnification
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process where concentrations of a harmful substance increase in organisms at higher trophic levels in a food chain or web
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invasive species
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a species that reproduces rapidly when introduced into a new habitiat
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conservation
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the wise management of natural resources, including the preservation of habitats and wildlife
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ozone layer
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atmospheric layer in which ozone gas is relatively concentrated
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global warming
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increase in the average temperature of the biosphere
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