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A continent is a large geographical region defined by the continental shelves and the cultures on the continent. [1] In the modern day, there are seven continents. However, there have been more continents throughout history. Vaalbara was the first supercontinent. [2] Europe is the newest continent. [3]
Within Africa, Homo sapiens dispersed around the time of its speciation, roughly 300,000 years ago. [ note 1 ] The recent African origin theory suggests that the anatomically modern humans outside of Africa descend from a population of Homo sapiens migrating from East Africa roughly 70–50,000 years ago and spreading along the southern coast ...
[web 8] This model was confirmed by a genetic study published in 2018, which attributed the origin of Maykop individuals to a migration of Eneolithic farmers from western Georgia towards the north side of the Caucasus. [144] It has been suggested that the Maykop people spoke a North Caucasian, rather than an Indo-European, language. [87] [145]
This theory suggests that the shapes of continents and matching coastline geology between some continents indicates they were joined together in the past and formed a single landmass known as Pangaea; thereafter they separated and drifted like rafts over the ocean floor, currently reaching their present position.
A continent is any of several large geographical regions. Continents are generally identified by convention rather than any strict criteria. A continent could be a single landmass or a part of a very large landmass, as in the case of Asia or Europe. Due to this, the number of continents varies; up to seven or as few as four geographical regions ...
The geologic time scale or geological time scale (GTS) is a representation of time based on the rock record of Earth. It is a system of chronological dating that uses chronostratigraphy (the process of relating strata to time) and geochronology (a scientific branch of geology that aims to determine the age of rocks).
Abraham Ortelius's 1570 world map, the world's first modern atlas.. Geographical exploration, sometimes considered the default meaning for the more general term exploration, refers to the practice of discovering remote lands and regions of the planet Earth. [1]
Asia and Europe are considered separate continents for historical reasons; the division between the two goes back to the early Greek geographers. In the modern sense of the term "continent", Eurasia is more readily identifiable as a "continent", and Europe has occasionally been described as a subcontinent of Eurasia. [68]