Human Evolution Human Evolution‚ the biological and cultural development of the species Homo sapiens‚ or human beings. A large number of fossil bones and teeth have been found at various places throughout Africa‚ Europe‚ and Asia. Tools of stone‚ bone‚ and wood‚ as well as fire hearths‚ campsites‚ and burials‚ also have been discovered and excavated. As a result of these discoveries‚ a picture of human evolution during the past 4 to 5 million years has emerged. Human Physical Traits Humans are
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2014 Human Evolution The Evolutionary History of Life on earth traces the process by which living and fossil organisms have evolved since life on the planet first originated until the present day. According to research earth formed about 4.5 Ga (billion years) ago and life appeared on its surface within 1 billion years. The similarities between all present day organizes indicate the presence of a common ancestor from which all known species have diverged through the process of evolution. Every
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Human evolution is the biological and cultural development of humans. A human is any member of the species Homo sapiens‚ meaning "wise man." Since at least the Upper Paleolithic era‚ some 40‚000 years ago‚ every human society has devised a creation myth to explain how humans came to be. Creation myths are based on cultural beliefs that have been adopted as a legitimate explanation by a society as to where we came from. The science of paleoanthropology‚ which also tries to create a narrative about
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Biology – Period 1A 24 November 2014 How is the Human Race Still Evolving Today? Evolution is the descent of organisms from common ancestors with the development of genetic and phenotypic changes over time that makes them more suited to the environment. However‚ with how advanced and dominant human society is compared to the rest of the world‚ many ponder whether evolution is still happening for the human race. We can see signs that we‚ as humans‚ are still evolving through the fact that we drink
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Human Evolution is just a theory. Hominids began to come to life about four to five million years ago and only one will adapt to become us. Many species had to adapt to their environment or die off. The result of changes in the environment made us today. Australopithecus aferensis are one of the first hominids‚ also known as the Australopith. The Australopith had a reason why they had to stand up on two legs. Eight million years ago‚ Africa was covered with tropical rain forests. Suddenly‚ tectonic
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Aging of the human skin Enlarged version The formation of lines and wrinkles in light-exposed areas throughout the body‚ such as on the face‚ throat‚ décolleté and hands is a well-known sign of skin aging. Lines and wrinkles are influenced by both intrinsic and extrinsic factors. The numerous intrinsic factors are age‚ gender‚ genetic disposition and race. In exposed and unprotected zones of the body such as on the skin of the hands and the face‚ extrinsic factors such as UV light‚ weather
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The human skin is the largest organ that covers our entire body‚ although it may seem simple‚ the skin carries out many functions. The skin has three main layers also known as the Epidermis‚ Dermis‚ and the Hypodermis. The Epidermis is the outermost layer that shields the body and consists of four cells types and five distinct layers. The Dermis is right under the Epidermis which contains strong connective tissue. This layer also contains our hair follicles that help regulate our body temperatures
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thought that perhaps‚ the only colour in real life is white? White light is indeed the bearer of all colours. The colours we see are reflections bouncing off an object or are the light source itself. The light sources change and the colours with them. Colour is not a stable affair. Colour is light alone‚ but our experience is so direct that we trust our eye and believe that a colour is inherent to an object. Imagine living in a world where everything is white in colour! However‚ the world we live
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Human Evolution‚ lengthy process of change by which people originated from apelike ancestors. Scientific evidence shows that the physical and behavioral traits shared by all people evolved over a period of at least 6 million years. A. From Ape To Man Fossils from several different early australopith species that lived between 4 million and 2 million years ago clearly show a variety of adaptations that mark the transition from ape to human. The very early period of this transition‚ prior to 4 million
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Colours Imagine a world without colours. If you see only shades of grey around you‚ wouldn’t you find it dull and boring? Would it make you feel gloomy and that everything is ugly and uninteresting? I am quite certain you would say yes to all these questions. We humans love colours. We love colours because colours make our world beautiful. All things on earth have their own colours and hues. Even things of the same type may have many shades and colours. Flowers‚ for example‚ come
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