Voir la source de OHS2020 Chap5

=What are the main characteristics of the ''Homo'' genus?=
blablabla
{{co|Answer the question!}}--[[Utilisateur:Pierre.brawand|Pierre.brawand]] ([[Discussion utilisateur:Pierre.brawand|discussion]]) 28 avril 2020 à 09:59 (CEST)

=Where is the human behavioral complexity shown?=
Humans today show great behavioral complexity compared to other animals and it can be seen in our reliance on '''tool-making''' and '''tool-using''' in everyday life.--[[Utilisateur:MarioS|MarioS]] ([[Discussion utilisateur:MarioS|discussion]]) 7 avril 2020 à 17:37 (CEST)

=What differentiates humans from apes?=
Complex language is  a defining feature of humans because we can deal with '''abstract concepts''' and talk about the distant past or future, while apes can only transmit basic information. Also our '''long-legged body shape with a human-shaped rib cage and the loss of climbing adaptations in the upper body''' is an important human characteristic.--[[Utilisateur:MarioS|MarioS]] ([[Discussion utilisateur:MarioS|discussion]]) 7 avril 2020 à 17:43 (CEST) Humans also have a relatively large brain compared to their body size. --[[Utilisateur:ColetteB|ColetteB]] ([[Discussion utilisateur:ColetteB|discussion]]) 23 avril 2020 à 16:26 (CEST)

=How was the ancient climate ?=
The ancient climate is caracterised by lots of fluctuations that went from one extreme to the other. 
The climate went from glacial area to a more warmer period depending on the time period. These fluctuations caused the loss of a lot of different species that then had to adapt themselves in order to survive. Our period which is a quite stable climate period is called the Holocene. There exists 3 factors behind the warming of the earth; first, "the degree of circularity of the earth's orbit around the sun", second, "the changing tilt of the earth's axis of rotation", and then, "the varying time of the year when the earth is closest to the sun.".
The ancient climate took a big role in terms of evolution of the species and also the losses and creations of new ones.--[[Utilisateur:NoraM|NoraM]] ([[Discussion utilisateur:NoraM|discussion]]) 20 avril 2020 à 14:22 (CEST)

=What type of fossils were found by Louis and Mary Leakey in 1960 and how were they different from the previous discoveries ?=
In 1960 the couple of palaeoanthropologists found fossils, different from the P.''bosei'' cranium previously discovered, they found a distorted mandible with teeth, parts of a braincase but also hand, leg and foot bones from young and adult individuals. The teeth at the front were larger and the back teeth smaller than the ones of the australopiths, therefore more human-like. The bones of the skull were thin and large in area, this suggested that the brain was larger here than in australopiths and modern apes. It was decided that these new fossils were part of a new species of the genus ''Homo'', named ''Homo Habilis''. <br>
=How is ''Homo georgicus'' different from ''Homo erectus'' and why is this relevant?=
The fossils found at Dmansi (West Asia) suggested that while ''Homo georgicus'''s physiology was similar to ''Homo erectus'', the former was a bit smaller, with smaller legs (resulting in a shorter adult size) and smaller brain sizes. Therefore experts concluded that these fossils had to belong to another species. This finding is relevant because, as ''Homo georgicus'' is thought to be a more primitive species of ''Homo erectus'', it indicates the origins of the latter species, tracing it back to western Asia, before it moved more eastward.   --[[Utilisateur:GavinC|GavinC]] ([[Discussion utilisateur:GavinC|discussion]]) 27 avril 2020 à 12:56 (CEST)
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