Флора австралии ,сочинение на английском. помогите пожалуйста...........
Vegetation Australia and Oceania very distinctive. This particularly applies to Australia, which for a long period of geological history has evolved in isolation from other parts of the globe.Flora of Australia is so different from other parts of the land floras that this continent together with Tasmania stands out in particular the Australian botanical and geographical area. Oceania refers to different subdomains Palaeotropical area. However, the proximity to the majority of Australias major islands of Oceania, and the existence of a land connection between them at a time when the formation of the modern flora, has meant that in the vegetation of Australia and some islands of Oceania, there are many common elements.Formation of tropical flora of Australia and Oceania began in the Cretaceous and continued at the beginning of the Tertiary period, when Australia was represented by a single land with the neighboring islands. Until the end of the Mesozoic Australia was connected to South America, South Africa and Antarctica. Past due, apparently, by the end of the Mesozoic broken, due to the islands to the east and north, and through them to Asia, existed in the Tertiary period. This explains the floristic community of Australia with the other continents of the southern hemisphere, as well as Asia and the islands of Oceania. But since, obviously, from the middle of the Tertiary period Australia was isolated from other continents, the composition of its flora is dominated by elements that are not found in other parts of the world.On the territory of the Australian existed disparate centers of formation of flora - one in the south-west and in the central part, the other in the east. Between these centers in the Mesozoic and Tertiary marine basin existed, which drained and vegetation populated only by the beginning of the Quaternary period.
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