Chapter 5 Vocabulary Flashcards

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1
Q

Extinction

A

When the last member of a species dies

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2
Q

Biodiversity

A

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

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3
Q

Background extinction

A

The gradual process of species becoming extinct

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4
Q

Mass extinction

A

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

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5
Q

Overexploitation

A

The excessive use of species that have economic value

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6
Q

Habitat fragmentation

A

The separation of an ecosystem into small pieces of land

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7
Q

Edge effects

A

The different environmental conditions that occur along the boundaries of an ecosystem

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8
Q

Biological Magnification

A

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

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9
Q

Eutrophication

A

Destroys underwater habitats for fish and other species

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