The theory of evolution

The fossils of organisms preserved in the lowest layers represent animals and plants. By studying the type of fossils in the different strata, it is possible to build up a picture of how the populations of organisms changed over millions of years.

Рубрика Биология и естествознание
Предмет Biology
Вид презентация
Язык английский
Прислал(а) Alan Richardson
Дата добавления 20.01.2013
Размер файла 3,8 M

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