why human ancestors left the trees and became bipedal?
CAN TAKE ANSWER FROM GOOGLE BUT THERE SHOULD BE LONG ANSWERS
Answers
INTRODUCTION
Bipedalism is an essential adaptation of the Hominin progeny that is considered the major force behind several skeletal changes shared by all the bipedal hominins (Lovejoy 1988). There are different hypotheses that explain how and why bipedalism evolved in humans. Similarly, the timing of the evolution of bipedalism is debated. The possible reasons for the evolution of human bipedalism include the freeing of the hands to use and carry tools, threat displays, sexual dimorphism in food gathering, and changes in climate and habitat (from jungle to savanna).
Bipedalism: New Perspective
As in other species, several characteristics of the ape-like hominin ancestors were advantageous for their survival. Human bipedalism was driven by the simple Darwinian principle of natural selection. Hominins did not consciously become bipedal for a specific reason. Instead, eons of time allowed the evolution of bipedalism in humans because it was a favorable trait (Auletta et al. 2011). Specifically, a distinctive set of observable traits in each species constitute characteristics that have lasted through natural selection out of the countless mutation traits that were observed during the timeline of the species (Ayala 2007).
This issue becomes more complex to investigate the actual process of 'Natural Selection', or 'Darwinism' because several factors intervene over millions of years (Darwin 1963). Such factors may be interaction with the animals, the avoidance of competition, and/or the effective protection of offspring. Natural selection may also be influenced by the changes in the environmental settings (Miller 1995). 'Natural selection' is, however, a vague term that includes several factors. But, because of the wide definition of Darwinism, it does not have to be a single discrete principle, or hypothesis that provides holistic explanations of how 'survival' occurs. Scholars tend to fixate on causation, where A caused B (in this case, B is bipedalism), and are currently attempting to find an exact answer for the cause of bipedalism. However, the principles of evolution do not necessarily operate like cause and effect. Biological evolution is an example of trial and error (Wright 1932), i.e., if a trait works, it remains. Again, various traits were observed during the evolutionary timeline, but only a few remained.
The reason why bipedalism remained was because it was beneficial for the efficient survival of both the unit itself and its offspring. There are several theories debating human bipedalism (Tuttle 2015). However, if the evidence explains how bipedalism helped human ancestors survive, it was sensible to believe that there could be multiple answers to the question of the evolution of bipedalism. Specifically, the incremental change of bipedalism could have aided the actual survival of the animal unit through its adaption to new environments, avoidance of predators, conservation/gaining of more nutriments, and successful protection of the progeny by the parental unit. It is possible that bipedalism provided a variety of benefits to the hominin species (Napier, 1964; Sigmon, 1971).
Furthermore, there are several paths through which evolution could have benefited the survival of the ancestors. However, the hominins are the only bipedal species out of all of the great apes (Harcourt-Smith 2007). Therefore, it is important to note that this change was advantageous for the humans but not advantageous for the other great apes. A retracing of the evolutionary traits backwards in an evolutionary timeline from the modern Homo sapiens to the Homo heidelbergensis, H. erectus, Australopithecus andArdipithecus revealed that the latter species had a closer resemblance to the last common ancestor of chimpanzees and humans. The unsettled dispute lied with the earliest bipedal hominin, which could be Sahelanthropus, Ardipithecus or Orrorin (Su 2013). In addition, several studies have indicated that the extinct hominin Ardipithecus, which was extremely similar to the common chimpanzee ancestor, possessed the ability to walk on two feet, while spending time in the trees. Indeed, the first hominin, or the first common ancestor was partially bipedal, i.e., it possessed a limited ability to walk on two feet
The following paragraphs will review several prominent theories of bipedalism. The different models of bipedalism will be examined in accordance with the factors of natural selection. Then a comprehensive approach based on an evolutionary timeline of other great apes in the Hominini tribe and even in the Homininae subfamily will be explained considering the aforementioned perspective of multiple answers.
Answer:
Again, various traits were observed during the evolutionary timeline, but only a few remained. The reason why bipedalism remained was because it was beneficial for the efficient survival of both the unit itself and its offspring. There are several theories debating human bipedalism
Bipedalism is an essential adaptation of the Hominin progeny that is considered the major force behind several skeletal changes shared by all the bipedal hominins (Lovejoy 1988). There are different hypotheses that explain how and why bipedalism evolved in humans. Similarly, the timing of the evolution of bipedalism is debated. The possible reasons for the evolution of human bipedalism include the freeing of the hands to use and carry tools, threat displays, sexual dimorphism in food gathering, and changes in climate and habitat (from jungle to savanna).
Bipedalism: New Perspective
As in other species, several characteristics of the ape-like hominin ancestors were advantageous for their survival. Human bipedalism was driven by the simple Darwinian principle of natural selection. Hominins did not consciously become bipedal for a specific reason. Instead, eons of time allowed the evolution of bipedalism in humans because it was a favorable trait (Auletta et al. 2011). Specifically, a distinctive set of observable traits in each species constitute characteristics that have lasted through natural selection out of the countless mutation traits that were observed during the timeline of the species (Ayala 2007).
This issue becomes more complex to investigate the actual process of 'Natural Selection', or 'Darwinism' because several factors intervene over millions of years (Darwin 1963). Such factors may be interaction with the animals, the avoidance of competition, and/or the effective protection of offspring. Natural selection may also be influenced by the changes in the environmental settings (Miller 1995). 'Natural selection' is, however
Explanation:
please follow me guys I will follow u back
please mark me as brain list because I answer first