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22 Cards in this Set
- Front
- Back
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natural resources |
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 cn be identified |
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nonpoint source |
a widely spread of pollution that is difficult to link to a specific point or 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 resources |
a source that is either always available or is natually replaces in a relatively short time |
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nonrenewable resources |
a natural resource that is not replaced in a useful time frame |
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substainable use |
the use of a resource in ways that maintain the resource at a certain qulity for a certain period of time |
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ecological footprint |
the amount of land and water that individules use to meet their resources needs and to absorb the waste 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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expotential 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 yield |
an amount of a renewable resource that can be harvested regularly without reducing the suture supply |
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biodiversity |
the total number of different species on Earth, including those on land, in water, and in the air |
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keystone species |
a species that influences the survival of many other species in the ecosystem |
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gene |
a sequence in DNA that determines a trait and is passed from parent to offspring |
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extinction |
the dissapearence of all memebers of a species from Earth |
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endangered species |
a species in danger of becoming extinct in the near future |
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threatened species |
a species that could become endangered in teh near future |
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habitat desctruction |
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 preservations |
