It is clear that, human evolution will continue (Ward, ). Ward () note that, there has been the common perception that, evolution of Homo sapiens is very little, especially after the prehistoric times. However, by using the recent genetic information collected from various populations across the globe, it is evident that, the pace at which the evolution of human Essays on Human Evolution The Misinterpretations of Social Darwinism. Social Darwinists took Charles Darwin’s theories of evolution and natural Sexual Selection as an Another Form of Natural Selection. Introduction Sexual selection is a controversial term due to Progress is Feb 01, · In his book The Origin of Species (), Darwin shared four points of natural selection that are vital to human evolution: variation in population, which are the exhibited differences of individuals within a population in terms of appearance or behavior; inheritance of traits, how certain characteristics can be inherited from genetic parents and how some simply
Human Evolution Essays: Examples, Topics, Titles, & Outlines
Science and religion teaches people two vastly different things when it comes to the evolution of man. In religion, essay on human evolution, particularly Christianity, believers are taught to believe that man came from the hand of God — that it is God who should be acknowledged for the creation of man as is known today. However, science shows — and provides evidence — that man was not created as is. That man came from now-extinct primates. Human revolution has long been the subject of debate between creationists and evolutionists. It is the process that led to the emergence of humans as known today. These two terms are often interchanged but it really means two different things.
Evolution is focused on the change of a certain species — in this case, humans — goes through while natural selection refers to how organisms adapt to a change in their environment. It may be confusing, essay on human evolution, but an easy way to distinguish one from the other is remembering that the process of natural selection is the one that brought about evolution. In his book The Origin of SpeciesDarwin shared four points of natural selection that are vital to human evolution: variation in population, which are the exhibited differences of individuals within a population in terms of appearance or behavior; inheritance of traits, how certain characteristics can be inherited from genetic parents and how some simply cannot be inherited and are just developed over time; capability of offspring, the number of offspring produced in each generation increases thus limiting the number of resources available thus dictating the mortality rate for that generation, and; survival of the fittest, which is where all three elements culminate.
There are a number of theories that a non-scientific person has come up with regarding human evolution. One of the common misconceptions is that the modern man directly descended from an ancient line of apes. Charles Darwin claims to never have made that statement and modern scientists just dismiss this. Aside from these, there are other theories that scientists recognize, essay on human evolution, like the savannah hypothesis, the aridity hypothesis, the turnover pulse hypothesis, and the Red Queen hypothesis. The savannah hypothesis theorizes that hominins or apes originally lived in trees and walked using all four limbs. This was so until an event forced them to move out of the forest and onto a savannah where they began to evolve slowly and started to walk using only their two feet.
The savannah hypothesis was further expanded into the aridity hypothesis which tells of how the earth began to lack supply of water thus resulting in more savannah landscapes. Because of these certain conditions, the apes were forced to move out of their original habitat and adapt to a new way of life, essay on human evolution. The turnover pulse hypothesis posits that changes in the environment is better taken by generalist species rather than specialist species. Changes in the environment sometimes result to extinction because of the inability to adapt. Generalist species have the ability to spread out or move locations when the environment changes but the specialist species would have no choice but to adapt and exhibit a greater rate of evolution.
The Red Queen hypothesis says that organisms need to evolve constantly in order to survive. Organisms encounter numerous changes in the environment they live in in their lifespan and if they fail to adapt to certain changes, it would mean extinction for their entire species. For humans, improving cognitive abilities allows humans to gain influence over other humans and control resources. Scientists found that it was about seven million years ago that humans started to evolve. However, essay on human evolution, the human tribe was found to have existed around 23 million years ago. From being closely related to primitive apes, living in caves, and having absolutely no knowledge on how to use tools to improve their way of life, humans have come a long way since then.
The first modern humans, according to research, appeared recently aboutyears ago. Between 23 million and five million years essay on human evolution, the family Hominoidea split into two sub-families which was to become the lineage of apes and humans. The Dryopithecus is an extinct genus of ape species that lived 23 to three million years ago in Africa, China, India, and Europe. Although, they were found to have originated from Africa. They were believed to have been alive at a time when the Earth was densely populated with lush forests and tropical lowlands. They are believed to have been herbivores mostly due to their living conditions, essay on human evolution. The second is the Ramapithecus. Its remains were first discovered in Punjab, then have also been discovered in Africa and Saudi Arabia.
Like the Dryopithecus, they also lived in forests. They also resided in grasslands too. Their remains were found to have robust jaws, shorter canines, and relatively thicker teeth enamel. Like modern humans, they had an upright posture, walked on two feet, and used hands to eat and to defend themselves. The next genus, Australopithecus, is the forerunner and is believed to be a close relative of the genus Homo. The fossils of Austrolopithecus were also found in South Africa. An excellently preserved fossil found in Ethiopia was named Lucy. The Homo species was first discovered in Java.
It had a relatively larger cranial capacity than all the previous genus, stands upright on two feet, and has fully-developed opposable thumbs. Among this genus are the extinct species Homo erectus, Homo habilis, Homo heidelbergensis, Homo naledi, and the modern man, Homo sapiens, essay on human evolution. This genus is known to have largely used tools like stones and quartz in their everyday life, dwelled in caves, knows how to hunt, and learned how to use fire. Homo sapiens neanderthalensis dwelled in Eurasia and some in Africa. Neanderthals were found to have mated with Homo sapiens and other species of archaic humans. Scientists are still figuring out how the event of mating with other human species has started, essay on human evolution.
They were quite capable of hunting large animals. Lastly, the ones known as the modern humans are the species known as Homo sapiens, essay on human evolution. The first discovered remains of Homo sapiens was found in Europe. It was named Cro-Magnon and was found to have a reduction in the structure of the jaws and a rounded skull. Like the Homo sapiens neanderthalensis, their main source of food was done by hunting. It was during their era that the first traces of drawings on the cave wall were found and were mostly made up of animal figures. The many eras have seen lots of changes in the human tribe. One of the main evolutionary human adaptations known is the fact that man has evolved from using all four limbs to walk to just using only two feet and reserving the two essay on human evolution limbs to grab tools and such.
Using two feet to transport oneself from one place to another enabled humans to reserve their hands for labor. Furthermore, bipedalism gave humans the ability to endure longer distances and duration spent on hunting and travelling. Being able to walk using two feet also reduced the burden of breathing as it is a significantly less taxing movement. Evolving to being an upright man also caused changes to the skeletal structure of man, especially in the lower essay on human evolution of the body. It resulted in changes in the joints, toes, arms, the spinal column, and the pelvis. The encephalization — or evolutionary increase of the brain size - began in the genus essay on human evolution Homo.
Specifically, in the species of Homo habilis. It was also observed that as a human grows older, the size of the brain also grows. This enabled humans to learn more and more skills that they can use to thrive in life. Humans have also evolved to exhibit some physical differences between the two sexes. The bodies of male and female humans are very different from one another. This evolutionary characteristic is known as sexual dimorphism. The bodies of human males are slightly larger than females, they have more body hair, and have less body fat while female humans exhibit a higher percentage of body fat, essay on human evolution, curved shape, and less body hair.
Some of the differences between the two sexes may have been because of the fact that females are relied on to take care of their offspring. Another notable evolution of humans is how humans now rely more on their sense of sight rather than sense of smell. In the early days. Humans had to rely on their nose a lot because it is direly needed for hunting. Now, humans place an importance on vision and no longer have a keen sense of smell, essay on human evolution. Modern humans find the sense of sight more important than other essay on human evolution. Other human adaptations include reduced body hair, a much more pronounced chin, and a descended larynx.
Up to this day, humans are still evolving. The process of evolution is continuous. However, it is not as obvious when compared to the previous species of humans. These evolutions can be noticed in the gene sequence of modern humans. Some genes exhibit characteristics that are due to natural selection such as the ability to run fast, or be afraid of seemingly harmless things. These characteristics or genes are not present in all humans but those who have it may pass it on to their offspring. Science is a pretty interesting subject. You will get to learn about so many things like how certain organisms and objects came to be. But writing essays on those interesting things may not seem essay on human evolution at all. If you are not that inclined to writing, then why not find an essay writer for hire?
Here at CustomEssayMeister, we provide quality custom written essays that are suited according to our client's essay on human evolution. Just send us a message so we will know how to help you with your writing assignment. Science and Creationism: A View from the National Academy of Sciences, Second Edition 2nd ed. National Academies Press. Tuttle, Russell Howard. Encyclopedia Britannica12 Jan. Home Essay science essay the human evolution. Science Essay: The Human Essay on human evolution Essay Science. What is Human Evolution? Theories of Early Human Evolution There are a number of theories that a non-scientific person has come up with regarding human evolution. The Stages of Human Evolution Scientists found that it was about seven million years ago that humans started to evolve.
Human Adaptations The many eras have seen lots of changes in the human tribe, essay on human evolution.
Is human evolution speeding up or slowing down? - Laurence Hurst
, time: 5:48Human Evolution and Archaeology - Words | Essay Example
May 04, · Human evolution is the origin and evolution of Homo sapiens as a species that can be distinguished from other hominids, great apes, and mammals. Neanderthals are a unique species as they can be either classified as a subspecies of Homo sapiens as Homo sapiens neanderthalensis, or can be classified as a distinct and separate species as Homo Apr 02, · Updated: Apr 2nd, Scientists have described about five forces of human evolution. The common ones include genetic drift, mutations, natural selection and gene flow. Although some of the theories have raised disputes among biologists, each of the aforementioned phenomena has a tremendous impact on the population Feb 01, · In his book The Origin of Species (), Darwin shared four points of natural selection that are vital to human evolution: variation in population, which are the exhibited differences of individuals within a population in terms of appearance or behavior; inheritance of traits, how certain characteristics can be inherited from genetic parents and how some simply
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