wjec by2 key words biodiversity and evolution

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Created by: charlotte
Created on: 01-06-13 12:25

biodiversity

is a measure of the number of species on the planet

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extinction

the loss of species

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species conservation

the protection of plants, animals and the natural enviroment from the damaging effects of human activity

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fossil record

when fossils in a particular group are collaberated and give information about how and when they were formed giving a history of the earth

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mass extinction

a situation where many species no longer exist

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evolution

the way in which living things change over millions of years

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natural selection

survival of the fittist. organism which have the best suited facors such as a longer beak for gathering food have an advantage over other smaller beaked species and therefore they mate and the offspring develop these factors and the weaker short beak

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selection pressure

a force which causes particular organisms to evolve in a ceirten direction

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adaptive radiation

the process by which animals are adapted to different enviroments using there alleles

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Other cards in this set

Card 2

Front

the loss of species

Back

extinction

Card 3

Front

the protection of plants, animals and the natural enviroment from the damaging effects of human activity

Back

Card 4

Front

when fossils in a particular group are collaberated and give information about how and when they were formed giving a history of the earth

Back

Card 5

Front

a situation where many species no longer exist

Back

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wjec by2 key words biodiversity and evolution