MegaFauna in Australia

Australia is one of Earths twelve mega several(a) nations. Its unique plant life, is typified by the uniquely Australian gum tree, distinguishes Australia as one of the worlds sextette floristic regions. non b bely is Australia rich in species, but most of its natural plants and animals are endemic; that is, they occur naturally only in Australia. Australias high levels of uniqueness arise because for more than 50 jillion years, Australia has been an island unstained and its creature and flora has evolved in isolation. cardinal portion of Australias flowering plants, 84 % of mammals, 89 % of reptiles, 93 % of frogs, and 85 % of offshore marine fish are unique to Australia. level(p) among the extremely brisk birds, 45 % of species are confined to Australia. There are some(prenominal) reasons why Australia is rich in species. Despite an absence of high-minded mountain ranges and extensive forests, the continent spans nearly 35 degrees of parallel from 5 degrees in the north to nearly 40 degrees southmost and has a precipitous rainfall gradient from the lopsided Continental fringes to the arid interior. These gradients from the tropics to the cool temperate zones and from the wet to the modify produce a succession of communities, each with its distinctive and highly adapted flora and fauna.

The long stableness of the continent has too been important in the evolution of a diverse fauna and flora and the continents richest plant communities are found in the southwest of Western Australia and in the east on the sandstones wrap Sydney. twain regions receive a long history of stability and have not been glaciated or co! vered by the oceans for tens of millions of years. The crease of some flora can be traced nates to the Pangaean times For example, the fossil kauri pine Agathis jurassica... If you penury to beat out a full essay, order it on our website: OrderCustomPaper.com

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