Оценка:
Опубликованно: 01.04.2006.
Язык: Английский
Уровень: Средняя школа
Литературный список: Нет
Ссылки: Не использованы
  • Эссе 'Primary and Secondary Succession', 1.
  • Эссе 'Primary and Secondary Succession', 2.
Фрагмент работы

Ecosystems are environments where biotic (living) organisms and abiotic (non-living) components interact together to create a functional, complex network of nutrient and energy cycling. These balanced environments take time, sometimes many years, to develop. During the course of development, species are replaced by other species within the ecosystem, a process known as succession. Primary succession happens when species grow in locations where organisms have never previously existed. Secondary succession occurs after an ecosystem disturbance. …

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