The Evolution Of Evolution Evolution is a theory that argues that all organisms alive on earth today share a common ancestor. It is thought that through generations, specific changes or adaptations were established in species in order to help them survive, reproduce, and raise offspring. But how are we certain that these changes occurred? · Old as the hills and practically unsolvable, the problem has led to a number of theories, most of which name the divine power as the reason for the universe to exist. We will write a custom Essay on The Theory of Evolution specifically for you. for only $ $11/page. certified writers online. Learn More Read this essay to learn about: 1. The evolution of life – Virus, Mycoplasma and Rickettsiae 2. Evolution of the plant kingdom 3. Fossils blogger.comted Reading Time: 9 mins
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Essay Examples. Evolution is the complexity of processes by which living organisms established on earth and have been expanded and modified through theorized changes in form and function. Human evolution is the biological and cultural development of the species Homo sapiens sapiens, or human beings. Humans evolved from apes because of their similarities. This can be shown in the evidence that humans had a decrease in the size of the face and teeth that evolved. Early humans are classified in ten different types of families.
Essay on evolution believe that humans were always humans. Humans are classified in the mammalian family Primates. In this arrangement, humans, along with our extinct close ancestors, and our nearest living relatives, the African apes, are sometimes placed together in the family Hominidae because of genetic similarities. Two-leg walking seems to be one of the earliest of the major hominine characteristics to have evolved.
In the course of human evolution the size of the brain has been more than tripled. The increase in brain size may be related to changes in hominine behavior See figure 3.
The third major trend in hominine development is the gradual decrease in the size of the face and teeth. Between 7 and essay on evolution million years ago, primitive apelike animals were widely distributed on the African and, later, on the Eurasian continents See figure 2. Although many fossil bones and teeth have been found, the way of life of these creatures, and their evolutionary relationships to the living apes and humans, remain matters essay on evolution active discussion among scientists.
The evidence for human evolution begins with the australopithecines. All the australopithecines were bipedal and therefore possible hominines. In details of their teeth, jaws, and brain size, however, they modify enough among themselves to be divided into five species: Australopithecus anamensis, A. afarensis, A. africanus, A. robustus, essay on evolution, and A. Genus Homo are essay on evolution divided in five different spices: Homo erectus, H.
habilis, H. sapiens, and H. sapiens sapiens. According to Britannica Encyclopdia, Australopithecus anamensis lived in Kenya between 4. arensis lived in eastern Africa between 3 and 4 million years ago.
This australopithecine had a brain size a little larger than chimpanzees. Some had canine teeth more sticking out than those of later hominines. No tools of any kind have been found with A. afarensis fossils. afarensis clearly evolved into A.
africanus had a brain similar to that of its ancestor. However, although essay on evolution size of the chewing teeth remained large, the canines, instead of sticking out, essay on evolution, grew only to the level of the other teeth. No stone tools have been found in association with A. africanus fossils. The more recent include the A. robustus, limited essay on evolution southern Africa, and A. boisei, found only in eastern Africa.
The robust australopithecines represent a specialized adaptation because their principal difference from other australopithecines lies in the large size of their chewing teeth, jaws, and jaw muscles. Until recently, Homo erectus was considered an evolutionary ancestor of modern humans, or Homo sapiens.
Homo erectus had a larger brain than earlier hominines. Homo erectus essay on evolution also a taller, with an evenly face and smaller tooth. Scientists believe this species lived in Africa between 2 million and 1. habilis is the earliest known member of the genus Homo. habilis had a larger brain than australopithecines.
Australopithecines had long arms and short legs, essay on evolution, similar to the limbs of apes. Even, H. habilis were similar modern humans with its limbs and small body size relative to its height. habilis had smaller molars teeth and a less raised face than earlier Hominines.
habilis was taller than australopithecines, but shorter than Homo erectus. sapiens are not identical in aspect with modern humans. sapiens sapiens, essay on evolution, first appeared more than 90, years ago. Creationists say that human ancestors were not apes.
They were always humans, although they were smarter and larger than humans are today. Evolutionary theory is a myth. God created everything. People that believe in creationism say that if man descended from ape-like creatures, then humans should be like them. Yet humans have very different DNA. The number of vertebrae in our backbone is different, essay on evolution. Human cranial capacity is totally different. No evidence is available about human remains from earlier times, which support evolutionary theory.
Sometimes people lived in caves for a time until they could become settled in homes. There is evidence that ancient people lived in homes at the same time that others were living under trees or in caves. The theory of evolution is the most reasonable theory today. The creationist theory is only written and the evolutionary theory is actual living proof that humans did evolve from apes and why the environmental adaptations have made humans the dominant creatures on earth.
In the course of time a split occurred between humans and apes, both have some similar characteristics and that explains humans evolving from type of ancient ape. Essays Find a Tutor. APA MLA Harvard Vancouver Essay Examples. November Human Evolution. Copy to Clipboard Reference Copied to Clipboard. Human Evolution [Internet], essay on evolution.
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· Old as the hills and practically unsolvable, the problem has led to a number of theories, most of which name the divine power as the reason for the universe to exist. We will write a custom Essay on The Theory of Evolution specifically for you. for only $ $11/page. certified writers online. Learn More · Evolution is the complexity of processes by which living organisms established on earth and have been expanded and modified through theorized changes in form and function. Human evolution is the biological and cultural development of the species Homo sapiens sapiens, or human beings. Humans evolved from apes because of their blogger.comted Reading Time: 6 mins Evolution is the theory that organisms have developed with their bodies modified overtime. New species have evolved looking extremely different from their predecessors. It’s because of science, we understand the beauty of evolution and we see it with evidence that supports this theory in fossil Understanding Evolution: Vestigial Structures
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