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22 Cards in this Set
- Front
- Back
natural resource |
Anything naturally occuring in the environment that humans use |
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pollution |
Contamination of Earth's land,water,or air |
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point source |
A specific source of pollution that can be identified |
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non point source |
A widely spread source of pollution that is difficult to link to a specific point of origin |
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environmental science |
The study of the natural processes that occur in the environment and how humans can affect them |
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renewable resource |
A resource that is either always available or is naturally replaced in a relatively short time |
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nonrenewable resource |
A natural resource that is not replaced in a useful time frame |
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sustainable use |
The use of a resource in ways that maintain the resource at a certain quality for a certain period of time |
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ecological footprint |
The amount of land and water that individuals use to meet their resource needs and to absorb the wastes that they produce |
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conservation |
The practice of using less of a resource so that it can last longer |
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exponential growth |
Growth pattern in which individuals in a population reproduce at a constant rate,so that the larger a population gets the faster it grows |
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sustainable yeild |
An amount of a renewable resource that can be harvested regularly without reducing the future supply |
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biodiversity |
The total number of different species on Earth,including those on land,in the water,and in the air |
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keystone species |
A species that influences the sruvival of many other species in an ecosytem |
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gene |
A sequence of DNA that determines a trait and is passed from parent to offspring |
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extinction |
The disappearance of all members of a species from Earth |
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endangered species |
A species in danger og becoming extinct in the near future |
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threatened species |
A species that could become endangered in the near future |
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habitat destruction |
The loss of a natural habitat |
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habitat fragmentation |
The breaking of a habitat into smaller,isolated pieces |
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poaching |
Illegal killing or removal of wildlife from their habitats |
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captive breeding |
The mating of animals in zoos or wildlife preserves |