Chap 5? Flashcards

(22 cards)

0
Q

The variety of life in an area that is determined by the number of different species in that area

A

Biodiversity

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1
Q

Entire species permanently disappear from the biosphere when the last member of the species dies

A

Extinction

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2
Q

The variety of genes or inheritable characteristics hat are present in a population comprises

A

Genetic diversity

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3
Q

Number of different species and the relative abundance of each species in a biological community

A

Species diversity

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4
Q

The variety of ecosystems that are present in the biosphere

A

Ecosystem diversity

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5
Q

The gradual processor species becoming extinct

A

Background extinct

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6
Q

An event in which a large percentage of all living species become extinct in a relatively short period of time

A

Mass extinction

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7
Q

Are all material and organisms found in he biosphere

A

Natural resource

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8
Q

Excessive use for economic value

A

Over exploitation

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9
Q

The separation of an ecosystem into small pieces of land

A

Habitat fragment

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10
Q

Different environmental conditions that occur amoung the boundaries of an ecosystem

A

Edge effect

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11
Q

Increasing concentration of toxic substances in organisms as trophic levels increase in a food chain or food web

A

Biological magnification

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12
Q

Destroys underwater habits for fish and other species

A

Eutrophication

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13
Q

Nonnative species that are either intentionally or unintentionally transported to a new habit

A

Introduced species

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14
Q

Those resources that are replaced by natural processes faster than they are consumed

A

Renewable resource

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15
Q

Resources that are found on earth in limited amounts or that are replaced by natural processes over extremely long periods of time

A

Nonrenewable resource

16
Q

Using resources at a rate which they can web replaced or recycled while preserving the long term environmental health of the biosphere

A

Sustainable use

17
Q

Species that are only found in that specific geographic area

18
Q

The use of living organisms to detoxify a polluted area

A

Bioremediation

19
Q

Adding natural predators to a degraded ecosystem

A

Biological augmentation

20
Q

Species becoming extinct or in danger of becoming extinct

A

Endangered species

21
Q

The number of species is dwindling

A

Threatened species