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5
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technique of adding essential materials to a degraded ecosystem.
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6
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overuse of species with economic value--a factor in species extinction. habitat fragmentation: habitat loss from separation of an ecosystem into small pieces of land.
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7
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technique using living organisms to detoxify a polluted area.
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8
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nonnative species deliberately or accidentally introduced into a new habitat.
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9
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gradual process of a species becoming extinct.
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10
|
any material or organism in the biosphere, including water, soil, fuel, and plants and animals.
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11
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any natural resource available in limited amounts or replaced extremely slowly by natural processes.
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13
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any different environmental conditions occurring along an ecosystem's boundaries.
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14
|
variety of ecosystems in the biosphere.
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15
|
variety of inheritable characteristics or genes in an interbreeding population.
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16
|
any resource replaced by natural processes more quickly than it is consumed.
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1
|
use of resources at a rate that they can be replaced or recycled. endemic species: species found only in one specific geographic area.
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2
|
water pollution from nitrogen-rich and phosphorus-rich substances flowing into waterways, causing algal overgrowth.
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3
|
in a biological community, the number and abundance of different species.
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4
|
a large-scale dying out of a large percentage of all living organisms in an area within a short time.
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5
|
increasing concentration of toxis substances, such as DDT, in organisms as trophic levels increase in food chains or food webs.
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12
|
the disappearance of a species when the last of its members dies.
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17
|
number of different species living in a specific area.
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