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Free research essays on topics related to: years ago

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  • Ice Age Extinctions Of The Megafauna
    1,675 words
    ICE AGE EXTINCTIONS OF THE MEGAFAUNA During the last Ice Age before humans arrived, the North American continent belonged to various forms of enormous, fantastic creatures. By the end of the Ice Age, most of these large animals had become extinct. Numerous attempts have been made to explain the disappearance of these animals, but there has yet to be a consensus. Among the theories that have been debated, two are predominant. They are the climatic change theory, and the overkill theory. The clima...
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  • Million Years Ago Five Hundred
    1,312 words
    On Saturday 12 th 2000, my family and I went on a float trip on the Huzzah River in Steelville, Missouri. The Huzzah River and its surroundings were a perfect location for me to look for my fossil. Since the water level was shallow, that enabled me to look to the river bottom. Almost immediately after I began my search near the edge of the river, I spotted a rock that appeared to have some sort of shell embedded in it. I decided this would be a good specimen for me to try to examine and identify...
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  • Million Years Ago 5 Million Years
    1,586 words
    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 paleo anthropology, which also tries to create a narrative abou...
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  • Million Years Ago 000 Years Ago
    951 words
    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...
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  • Million Years Ago Thousand Years Ago
    1,332 words
    Many people have different views regarding the same topic. Over the years, countless theories have been brought forward to answer the question of human origins. Scientists, archaeologists, anthropologists and religious groups have spent lots of time arguing in support of their own respected theories. With the use of technology such as carbon dating and improvements in scientific methods; new fossil evidence has traced humanities bipedalism back to five million years, shedding some light on human...
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  • 000 Years Ago Papua New Guinea
    1,657 words
    Oceania is a collective name for the islands scattered throughout most of the Pacific Ocean. The term, in its widest sense, embraces the entire insular region between Asia and the Americas. A more common definition excludes the Ryukyu, Kuril, and Aleutian islands and the Japan archipelago. The most popular usage delimits Oceania further by eliminating Indonesia, Taiwan, and the Philippines, because the peoples and cultures of those islands are more closely related historically to the Asian mainl...
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  • The Fossil Record Of Order Chiroptera
    710 words
    The Fossil Record of Order Chiroptera Bats are the second-most species group of mammals. In some tropical areas, there are more species of bats than of all other kinds of mammals combined. Bats, small mammals of the order Chiroptera, are a diverse group of over 1000 species living around the world. The fossil record of bats is poor when compared with that of most other kinds of mammals. This is probably because of their small size, typically low population densities, and habitat selection. Their...
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  • Million Years Ago 65 Million Years
    3,666 words
    Introduction To Evolution What is Evolution? Evolution is the process by which all living things have developed from primitive organisms through changes occurring over billions of years, a process that includes all animals and plants. Exactly how evolution occurs is still a matter of debate, but there are many different theories and that it occurs is a scientific fact. Biologists agree that all living things come through a long history of changes shaped by physical and chemical processes that ar...
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  • Carbon Dioxide Methane Greenhouse Gases
    2,776 words
    The Global Warming Global Warming The relationship between humans and the state of the ecosystem is not only dependent upon how many people there are, but also upon what they do. When there were few people, the dominant factors controlling ecosystem state were the natural ones that have operated for millions of years. The human population has now grown so large that there are concerns that they have become a significant element in ecosystem dynamics. One of these concerns is the relationship bet...
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  • Million Years Ago Homo Erectus
    1,251 words
    In the January/February issue of Archaeology magazine, the article Early Homo erectus Tools in China holds additional, yet questionable information about the foundations of the genus Homo. After recent findings of stone tools and animal bones at Renzidong (Renzi Cave) in Anhui Province, eastern China, Chinese scientists have concluded that Homo erectus may have been established there 400, 000 years earlier than formerly believed, almost 2. 25 million years ago. Besides this site being one of the...
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  • Million Years Ago Ice Ages
    283 words
    During the past billion years, the Earths climate has changed from warm, ice-free periods to cold periods where the Earth was covered with many huge glaciers, and back to warm again. We are currently near the end a warm period in between ice ages. It is believed that there were many ice ages, 36, 15, and 3 million years ago. The last ice age is estimated to have been about 20, 000 years ago. Approximately 55 million years ago the whole earth was warm. The difference in temperature of the equator...
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  • Million Years Ago 000 Years Ago
    1,389 words
    How Man evolved How did the early man evolve and change into the way we are today? Human Evolution, the natural development of the species Homo Sapiens, or human beings. The initial man, called the Hominid was short, not intelligent, and very ape like. The next man lived in the stone age; his name was Homo Habilis. After Homo Habilis, Homo Erectus evolved. He was smarter, more efficient, and walked up-right. And he leaded to us, Homo Sapiens A lot of fossils, bones, and teeth have been found at ...
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  • Million Years Ago 000 Years Ago
    1,421 words
    World History Human Evolution Final Copy January 19, 97 How did the early man evolve and change into the way we are today? Human Evolution, the natural development of the species Homo Sapiens, or human beings. The initial man, called the Hominid was short, not intelligent, and very ape like. The next man lived in the stone age; his name was Homo Habilis. After Homo Habilis, Homo Erectus evolved. He was smarter, more efficient, and walked up-right. And he leaded to us, Homo Sapiens A lot of fossi...
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  • Million Years Ago 000 Years Ago
    949 words
    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...
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  • Million Years Ago 000 Years Ago
    908 words
    ArdipithecusHuman Evolution Human Evolution Ardipithecus radius This species was announced in September 1994. It is thought to be the oldest known hominid species. It was dated at 4. 4 million years old. The majority of the fossils found were skull fragments. Other evidence suggests that this species was bipedal. The individuals were about four feet tall. Some fossils found indicate that radius may have been a forest dweller. The teeth resemble something between earlier apes and A. afarensis. Th...
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  • Million Years Ago 000 Years Ago
    1,149 words
    Our Human Evolution Human Evolution Our farthest believed ancestor is believed to be Australopithecus afarensis. This species, which lived between three and four million years ago, is believed to be the first real hominid because it is the oldest, and most primitive of any definite hominid form thus far found. Evidence from fossilized footprints, as well as pelvic and leg bones, which were similar to modern hominids, led scientists to believe that they could walk upright. Its teeth resembled mor...
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  • Billion Years Ago Million Years Ago
    605 words
    Mass Extinction in the Precambrian As the decades pass, technological advances have enabled researchers, entrepenures and pondering minds the ability to discover more and more about every aspect of our very existence. Over the past three decades the evolutionary tree of life has been expanded at least seven times over. Major advances have been made in the area of evolution to open the eyes of many to the extensive history of the earth. For the very first time, we have tangible knowledge that lif...
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  • Thousand Five Hundred Hundred Years Ago
    3,005 words
    The Egyptians believed that their kings were gods. Even after they had died, the rulers continued to affect daily life through their supernatural powers. In his new life in the underworld, the king would need everything he needed while alive, and he needed his home to last for eternity. While alive, Egyptian kings lived in palace of mud-brick, wore linen roves, and slept in wooden beds. In their gentle climate, more substantial comforts were not needed. But eternity last a whole lot longer than ...
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  • Million Years Ago 000 Years Ago
    648 words
    The Evolution of Lake Champlain Basin A billion years ago, Lake Champlain and all of North America was covered by huge glaciers. The air was rich in oxygen because of photosynthesis done by plants. The Adirondacks Mountains Mountain-building events made the then 20, 000 feet Adirondack Mountains. Minerals such as garnet, anorthosite, and diopside came from metamorphic rocks. The Iapetus Ocean What is now the Champlain Valley started to rift 600 million years ago. It turned into the Iapetus Ocean...
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  • Coast Guard Telephone Lines
    2,169 words
    The big essay is due day after tomorrow, and you havent even began to gather information on your topic. Your family didnt bother to buy a set of encyclopedias, and there is no way to get to a library before the essay is due. There is no hope of getting a passing grade, right? But wait, you have a computer, a modem, and the Internet! You are saved! All you have to do is log on the Internet, type in a keyword about your topic, and search. Instantly, you can get tons of information about your topic...
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