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Oceania is a name used for varying groups of islands of the Pacific Ocean. In its narrow usage it refers to Polynesia (including New Zealand), Melanesia (including New Guinea) and Micronesia. In a wider usage it includes Australia. It may also include the Malay archipelago. Uncommon usage includes islands such as Japan and the Aleutian Islands. Although the islands of Oceania do not form part of a true continent, Oceania is sometimes associated with the continent of Australia for the purposes of dividing the whole worldEarth also known as the Earth or Terra is the planet on which we live, the third planet outward from the Sun. It is the largest of the solar system's terrestrial planets, and the only planetary body that modern science confirms as harbouring life. The pla into continental groupings. As such, it is the smallest "continent" in areaThis article explains the meaning of area as a Physical quantity. Article area (geometry) is more mathematical. Area is a quantity expressing the size of a region of space. Surface area refers to the summation of the areas of the exposed sides of an objec and the second smallest, after AntarcticaAntarctica (from Greek nu;ταρκτικ&sigmaf opposed to the arctic) is a continent surrounding the Earth's South Pole. It is the coldest place on earth and is almost entirely covered by ice. It is not to be confused with the, in populationFor the use of the word population in statistics, see statistical population. In the most common sense of the word, a population is the collection of people—or organisms of a particular species—living in a given geographic area. Populations are studied in. This article primarily refers to the grouping of Polynesia, Melanesia, Micronesia and Australia. These traditional divisions are no more in use amongst researchers, that prefer to divide OceaniaFor the fictional superstate in George Orwell's novel Nineteen Eighty-Four see Oceania (fiction . Oceania is a name used for varying groups of islands of the Pacific Ocean. In its narrow usage it refers to Polynesia (including New Zealand), Melanesia (inc into Near OceaniaNear Oceania is a region, the part of Oceania that most linguists and scientists consider as one of the natural division of this continent — the other one is Remote Oceania — that includes Australia, New Guinea and the Solomon Islands. Prehistory The grea and Remote Oceania .

In ecology, Oceania is one of eight terrestrial ecozoneEcozone is a classification system of the world first proposed by Miklos Udvardy under the name biogeographical realms for conservation purposes. It defines 8 biogeographical realms with unifying features of geography, fauna and flora. Nearctic 22. km² (is, which constitute the major ecological regions of the planet. The Oceania ecozoneOceania is the smallest of the world's terrestrial ecozones, and unique in not including any continental land mass. The ecozone includes the Pacific Ocean islands of Micronesia, the Fijian Islands, and most of Polynesia (with the exception of New Zealand) includes all of Micronesia, Fiji, and all of Polynesia except New Zealand. New Zealand, along with New Guinea and nearby islands, Australia, the Solomon Islands, Vanuatu, and New Caledonia, constitute the separate Australasia ecozone.

If the narrower definition is accepted, every country but one in Oceania is borderless. The exception is Papua New Guinea which borders Indonesia. Wider definitions might also allow the borders of Indonesia with Malaysia and Timor Leste, and Malaysia's border with Brunei Darussalam to be considered within Oceania.