Many animals were brought to Australia by humans.. The earliest known introduced species is the Dingo, brought here by the Aborigines possibly as early as 40,000 years ago.More recently European settlers introduced large numbers of animals and plants both intentionally (cattle) and unintentionally (mice).any animals were brought to Australia by humans. Some, such as the sheep and cattle, have been vital to the Australian economy. Others have caused serious problems to the Australian environment, native animals and plants. Believe it or not the most destructive animal ever introduced into Australia are humans.
â Surprisingly, some of these Greek ideas led to similar modern ideas. Democritus (462-370 B.C.): proposed that all matter was made up of tiny, indivisible. particles called atomos (meaning âindivisibleâ) or atoms. Empedocles (490-430 B.C.): suggested all matter was composed of four basic elements: air, water, fire, and earth.
1803 - atomic theory. John Dalton, English chemist, revived the term of the atom when he suggested that each element was made up of unique atoms and the atoms of an element are all the same. He formulated his theory that chemical reactions result from the union and separation of these atoms and that atoms have characteristic properties.