реферат  Alaska’s Wildlife: on the Verge of Extinction

Problem of disappearance of rare species of animals and birds on Alaska. Black bears, American elks and musk oxen. Decrease in quantity of sea otters and petrels. Mission of restoration of the wild nature. Program of researches of University Ferbanks.

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Рубрика Экология и охрана природы
Вид реферат
Язык английский
Дата добавления 30.06.2014
Размер файла 18,4 K

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