1036_Hobsbawm, Eric - Masovna Proizvodnja Tradicija - Evropa 1870-1914.
Masovna Izumiranja
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Transcript of Masovna Izumiranja
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Izazvana usled promene klime, nestanka izvora hrane...
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Pri prelazu Ordovicija u Silur dogola su se dva masovnaizumiranja sto je drugo najvece izumiranje.Nestalo 27% svih porodiva i 57%svih rodova.u tom trenutku sav zivotse nalazio u okeanima.
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Pri prelazu Devona u Karbon-oko 70% svih zivihvrsta je izumrlo.Ovaj dogadjaj je trajao 20 milionagodina
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Pri prelazu Perma u Trijas-najvece izumiranje ikad.53% morskih porodica,84% morskih rodova,96% svih morskihvrsta I 70% svih kopnenih vrsta je izumrlo.
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Pri prelazu Trijasa u Juru-oko 20% svih morskih vrsta,48% svihrodova,ali I mnogi Arkosauri I vecina Terapsida su izumrli kao I poslednji od velikih vodozemaca
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Pri prelazu Krede u Palogen-kraj dinosaurusa
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