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Australasia is a subregion of Oceania, comprising Australia, New Zealand (overlapping with Polynesia), and sometimes including New Guinea and surrounding islands (overlapping with Melanesia). The term is used in a number of different contexts, including geopolitically , physiogeographically , philologically , and ecologically , where the term ...
The early bulbus cordis is formed by the fifth week of development. [4] The truncus arteriosus is derived from it later. [2]The adjacent walls of the bulbus cordis and ventricle approximate, fuse, and finally disappear, and the bulbus cordis now communicates freely with the right ventricle, while the junction of the bulbus with the truncus arteriosus is brought directly ventral to and applied ...
The origins of Western civilization can be traced back to the ancient Mediterranean world. Ancient Greece [d] and Ancient Rome [e] are generally considered to be the birthplaces of Western civilization—Greece having heavily influenced Rome—the former due to its impact on philosophy, democracy, science, aesthetics, as well as building designs and proportions and architecture; the latter due ...
The heart is a muscular organ found in humans and other animals. This organ pumps blood through the blood vessels. [1] Heart and blood vessels together make the circulatory system. [2] The pumped blood carries oxygen and nutrients to the tissue, while carrying metabolic waste such as carbon dioxide to the lungs. [3]
Australia, officially the Commonwealth of Australia, is a country comprising the mainland of the Australian continent, the island of Tasmania and numerous smaller islands. [N 5] It has a total area of 7,688,287 km 2 (2,968,464 sq mi), making it the sixth-largest country in the world and the largest in Oceania.
In his 1879 book Australasia, British naturalist Alfred Russel Wallace commented that, "Oceania is the word often used by continental geographers to describe the great world of islands we are now entering upon" and that "Australia forms its central and most important feature."
Rarotonga is the largest and most populous of the Cook Islands.The island is volcanic, with an area of 67.39 km 2 (26.02 sq mi), and is home to almost 75% of the country's population, with 10,898 of a total population of 15,040.
Australia-New Guinea (Mainland Australia, New Guinea, and Tasmania), the Indian subcontinent, and Zealandia (New Caledonia, New Zealand, and Norfolk Island) are all fragments of the ancient supercontinent of Gondwana.