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 |
| Вид | презентация |
| Язык | английский |
| Дата добавления | 20.01.2013 |
| Размер файла | 3,8 M |
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