Оценка:
Опубликованно: 06.01.2004.
Язык: Английский
Уровень: Средняя школа
Литературный список: Нет
Ссылки: Не использованы
  • Эссе 'Parasites Affects Frog Population ', 1.
Фрагмент работы

The number of healthy frogs in North America is rapidly decreasing due to a small parasite that results in the deformation of the frog population. University of Wisconsin graduate Pieter Johnson is studying the possible threat the parasite poses. Due to the increasing rate of production, man-made ponds are starting to outnumber natural wetlands and are forcing frogs to adapt to these inferior habitats. Ironically, it's lakes like these that the worm known as Ribeiroia flourish. …

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