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Pre-HistoryAnthropologists: Anthropologists study the skeletal remains of prehistoric life. Two examples of famousanthropologists are Mary Leaky and Donald Johanson. Donald Johanson was the anthropologist whodiscovered "Lucy". "Lucy"is the first known sign of humanity. The technical name for "Lucy" isAustralopithecus. The odd thing about "Lucy" is that she was both modern and pre-historic, having armslonger that her legs, and being bipedal was a strange combination for a creature said to be three millionyears old. Anthropologists study all over the world, but "Lucy" was found in Africa.Radiocarbon Dating: Radio Carbon dating is a dating method in which the amount of carbon14 in anobject is measured. The bodies carbons start to decay at death so they measure how old something is bymeasuring it's amount of carbon.
There are two major problems with this method though. 1) Thespecimen can only date back about 100,000 years. 2) If the original amount of carbon was distorted forany reason that will mess up the date given. For those reasons scientists developed other methods thathelp date things more accurately. These methods include the stardust theory and the river delta theory.Ice Age: Glaciers; large, slowly moving masses of snow and ice. Each of the four cold weather periodslasted from 10,000 to 50,000 years ago.
The Ice Age. Scientists believe that the age we live in startedafter the 4th period Ice Age sone25,000 years ago. Today 1/2 the earth is covered in ice. During thethird period 1/3 of the world was covered in ice. The ice age made animals either migrate or disappearentirely. (Saber Tooth Tiger, Woolly Mammoth) It also shaped the continents we live on today. Therewere also land bridges in the Ice age.Paleolithic Age: Paleolithic means "old stone" we called it the stone age.
1974 Ethiopia Donald Johansona well known anthropologist discovered female skeletal remains that might have been as old as 3 millionyears. Cro-Magnon People: When neanders disappeared cro's appeared in Europe. Better tools and weaponswere made, the 1st spear and paintings were made in this age.found in Spain and south France. Paintingsof animals (limestone) High foreheads, well developed chins, small brow ridges, by the end of the stoneage they no longer existed.Neolithic Age: New stone age about 10,000 years ago. Learned how to use sandstone tools, wood(wedges, saws,drills chisels, and needles) Earlier people were nomadic. Settlers tamed animals, raisedcattle, horses, sheep, and pigs.
Seeds, fertilizer and plows were also a part of the Neolithic age. 9,000years ago there was a Neolithic revolution where everyone settled..
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