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In paleoanthropology, the recent African origin of modern humans or the " Out of Africa " theory ( OOA) [ a] is the most widely accepted [ 1][ 2][ 3] model of the geographic origin and early migration of anatomically modern humans ( Homo sapiens ). It follows the early expansions of hominins out of Africa, accomplished by Homo erectus and then ...
Tinbergen's four questions, named after 20th century biologist Nikolaas Tinbergen, are complementary categories of explanations for animal behaviour. These are also commonly referred to as levels of analysis. [ 1] It suggests that an integrative understanding of behaviour must include ultimate ( evolutionary) explanations, in particular ...
Etsy Inc. is an American e-commerce company with an emphasis on the selling of handmade or vintage items and craft supplies. These items fall under a wide range of categories, including jewelry, bags, clothing, home decor, religious items, furniture, toys, art, as well as craft supplies and tools. Items described as vintage must be at least 20 ...
Author Michael Brodeur takes the gym too seriously, and not seriously at all at the same time, in his book “Swole: The Making of Men and the Meaning of Muscles” in an effort to show the ...
Intermediate minor rankings are not shown. In biology, a kingdom is the second highest taxonomic rank, just below domain. Kingdoms are divided into smaller groups called phyla (singular phylum). Traditionally, some textbooks from the United States and Canada used a system of six kingdoms ( Animalia, Plantae, Fungi, Protista, Archaea ...
Con: Etsy Takes a Cut of Your Earnings. Like most ecommerce sites, Etsy takes a percentage of your earnings for listing and selling products on its platform. On average, Etsy takes a 6.5% cut from ...
A map of East Africa showing some of the historically active volcanoes (as red triangles) and the Afar Triangle (shaded at the center), which is a so-called triple junction (or triple point) where three plates are pulling away from one another: the Arabian Plate and two parts of the African Plate—the Nubian and Somali—splitting along the East African Rift Zone Main rift faults, plates ...
The official population count of the various ethnic groups in Africa is highly uncertain, both due to limited infrastructure to perform censuses and due to rapid population growth. Some groups have alleged that there is deliberate misreporting in order to give selected ethnicities numerical superiority (as in the case of Nigeria's Hausa, Fulani ...