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Soyu tükenmekte olan hayvanlarla ilgili İngilizce sunum Extinct and Endangered Animals The extinction of species has always been a natural part of evolution. The fossil
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    Soyu tükenmekte olan hayvanlarla ilgili İngilizce sunum

    Extinct and Endangered Animals

    The extinction of species has always been a natural part of evolution. The fossil record shows that since life originated about four billion years ago the vast majority of species that have existed are now extinct. Extinct species outnumber living ones by a factor of perhaps a thousand to one. Scientists have identified five extinction events in Earth's history, with some so severe that more than 90 percent of all life forms were killed off. The last and most famous extinction was the Cretaceous-Tertiary event some 63 million years ago that killed off the dinosaurs and allowed the rise of mammals. It is thought to have been caused by an asteroid hitting Earth.
    Today we are in the middle of a sixth extinction event that began about 50,000 years ago but is now accelerating in an alarming speed! This extinction event is not a natural event, but is caused directly or indirectly by humans.
    Most recent extinctions extinctions have been associated with European expansion in the 15th and 16th century. However, in some parts of the world some species are known to have become extinct before the arrival of the Europeans. For example, the Polynesians who colonised the Hawaiian Island in the 4th, 5th, and 6th centuries may have been responsible for the loss of around 50 of the 100 or so species of endemic land birds in the period between their arrival and that of the Europeans.



    List Of Extinct and Endangered Animals

    African Elephant
    African Wild Dog
    American Alligator
    Asian Lion
    Atlantic Ridley
    Atlantic Salmon
    Bald Eagle
    Black Footed Ferret
    Black Lemur
    Blue Whale
    Bowhead Whale
    California Condor
    Carolina Parakeet
    Cheetah
    Chimpanzee
    Coelacanth
    Dodo
    Eastern Cougar
    Eskimo Curlew
    Extinct Animals
    Extinct Birds
    Extinct Mammals
    Fin Whale
    Florida Manatee
    Galapagos Flightless Cormorant
    Galapagos Flightless
    Gaur
    Gavial
    Giant Anteater
    Giant Armadillo
    Giant Panda
    Gorilla
    Great Auk
    Greater Prairie Chicken
    Green Turtle
    Grey Whale
    Grizzly Bear
    Humpback Whale
    Imperial Parrot
    Indian Rhinoceros
    Jaguar
    Japanese Crested Ibis
    Kagu
    Kakapo
    Komodo Dragon
    Leatherback Turtle
    Leopard
    Loggerhead Turtle
    Mediterranean Monk Seal
    Monkey Eating Eagle
    Mountain Gorilla
    Orangutan
    Passenger Pigeon
    Peregrine Falcon
    Piping Plover
    Pronghorned Antelope
    Przewalski's Horse
    Pygmy Hippopotamus
    Sea Otter
    Sei Whale
    Shortnose Sturgeon
    Snow Leopard
    Takahe
    Tapir
    Tiger
    Trumpeter Swan
    Vancouver Island Marmot
    White Pelican
    White Rhinoceros
    Whooping Crane
    Wild Ass
    Wild Yak

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