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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Human Evolution and the Fossil Record Scientists continue to debate the history of man. It is generally agreed upon by the scientific community‚ however‚ that humans evolved from lesser beings‚ and this essay will function to provide evidence to support this claim. Several points will be outlined‚ including the general physical changes that occurred between several key species on the phylogeny of man‚ and a discussion of dating methods used to pinpoint the age of the fossils. This essay will
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PROTECTION OF NATIVE SPECIES There are numerous ways that non-native or exotic species can have a negative impact on our environment and the diversity of life on our planet. The statistics are very alarming and more attention should be paid to the problem and finding a solution to the problem before the cost is more than we can bear. When compared with other threats to Biodiversity‚ the introduction of exotic species ranks second with habit destruction ranking first for being the cause of extinction
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Invasive Species The invasion of non-native species is one of the United Nation’s top five environmental concerns; however the term invasive species is one which many people do not fully understand. It is a term used in the media‚ by governments and ecologists‚ to indicate to the public that a new species has entered an area‚ and usually very little is said afterwards‚ however many people do not realise the severity and long term effects of invasive species in their area and worldwide. Unfortunately
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LOSES OF BIODIVERSITY Some species that are more vulnerable to extinction than others include species at the top of food chains‚ such as large carnivores. Endemic local species which is a species found in only one geographical area with a very limited distribution‚ species with chronically small populations‚ migratory species‚ species with exceptionally complex life cycles and specialist species with very narrow requirements are also the examples species that are more vulnerable to extinction
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Delgrosso 1 Biology and Society 12/02/13 In the present day there exists two species of elephants. These two species have many relatives that have come before them and died out. Several of these species are Paleomastodon‚ Deinotherium‚ Gompotherium‚ Primelephas which is a direct ancestor to the modern day elephant‚ Stegadon‚ American mastodon‚ and wooly mammoth. All of these species are considered Proboscidea which are mammals that have trunks “proboscidea encompasses the trunked mammals”
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Human Evolution During the evolution process from ape to man‚ it could be concluded that the biped and upright walking posture was a requirement for the emergence of human beings while the true difference between human and ape was the ability to make and use tools. Besides‚ the perfection of upright walking was the result of adapting the natural environment and the motivation for physical evolution of human. This posture positioned the head from the front to the top of body‚
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place‚ as well as other factors related to this amazing creature. Dolphins are marine mammals that are closely related to whales and porpoises. They vary in size from 1.2 meters (Maui ’s dolphin)‚ up to 9.5 meters (the orca or killer whale); part of the largest family in the Cetacean order‚ the Delphinidae ‚ dolphins have evolved relatively recently‚ about ten million years ago‚ during the Miocene. There has been a trend within mammalian evolution towards colonization of
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I think that invasive species are invaders. An invasive species are living organisms that are non-native species in particular environment. In other words‚ it is an imported species that has a tendency to spread and is capable of damaging the environment‚ the human economy and human health. Some of these invasive creatures have caused the extinction of whole species and have caused irreparable damage to the surrounding ecosystem. For example‚ alien insects‚ organisms‚ plants cause damage to crops
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The Endangered Species Act‚ enacted in 1973‚ was put into place to protect the world’s wildlife‚ however it was built on the scientific knowledge of species from back then. With advancing technology and understanding‚ the Endangered Species Act‚ while it was great basis for protection for many years‚ it is time for it to be updated to fit the ever-changing world. As more research is conducted‚ it is being shown that keeping genetic diversity is more important to a species then just population size
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