urchins became extinct. Paleontologists have proposed scenarios that could have caused these extinctions. One such scenario involves the growing number of small mammals which ate dinosaur eggs‚ and therefore caused the dinosaurs’ birth rate to drop. The birth rate became smaller than the death rate and the dinosaurs died out. This‚ however‚ is not a plausible scenario. This would only account for the dinosaurs‚ but not all the other creatures of that time. Paleontologists needed to come up with
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* Who are these scientists who study about the past? 1. Archeologists - who learn about early people by excavating and studying the traces of early settlements 2. Anthropologists – studies culture or people’s way of life. They re-create or establish a picture of early peoples’ cultural behavior 3. Paleontologists – studies human fossils which are evidences of early life * How do scientists gather information about the past? 1. Written Documents 2. Clues 3. Archaeological
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the reason for so many species being recognized. Fossil remains of over 75 psittacosaur individuals have been recovered‚ including nearly 20 complete skeletons with skulls (Lucas‚ 2006). Although there are up to fourteen named species‚ some paleontologists such as Zhae et al. (2006) believe taxonomic revision of the psittacosaur genus is overdue and it is probable
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Up until 1947‚ it was believed that the Cambrian Explosion marked the first true abundance of multicellular life. However‚ this was discovered to be untrue after Sir Douglas Mawson and R.C. Sprigg mistakenly came across numerous "fossil jellyfish" in the Ediacara Hills while observing what was originally believed to be sandstones belonging to the lowest strata of the Cambrian. At first‚ these finding were dismissed as "fortuitous inorganic markings."(AAS Biographical Memoirs.) Several years later
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Maddie Elizondo Hr 5 Trapped in Tar and Time The article‚ “Trapped in tar and time‚” shows that while we do not know a lot about our past there is some factual evidence thats supports several theories. For example‚ while studying the La Brea Tar pits (The the tar tar pits) scientist were able to find a skull of a women‚ “This is a 9000 year old skull...studies of her skeleton show that she was 4’ 10” and was 20-25 years of age.” So make sure if you ever visit La Brea‚ you watch your step. There
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dinosaur footprints came to light in August 2012 when well-known Maryland-based dinosaur hunter Ray Stanford brought one track to the center and the public’s attention. Later analysis by emeritus paleontologist Rob Weems‚ of the U.S. Geological Survey in Reston‚ Va. and Goddard’s consultant paleontologist Lee Monnens verified the track and discovered additional footprints hiding under a thin layer of topsoil in the same rock layer. Earlier this year‚ the footprint-bearing rock was reinforced and
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Did you ever want to be paleontologist‚ now you can. Fossils are the oldest rocks on earth. They can be anything that was over 4‚000 years ago. Fossils are what tell us what come before humans a million years ago. Do you ever stop and think there might be a T. Rex under your house. Well fossils preserved remains of organisms. Fossils can be over 4‚000 or a million years old. Usual the preserves are of animals. Fossils arranged from the size of a mouse to a ten story building. This is how all those
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education Objective: Explain how organizational behavior (OB) theories shape management pupose‚ positions‚ and essential skills. 3. Group behavior‚ power‚ and conflict are central areas of study for _____. a. archaeologists b. sociologists c. anthropologists d. social psychologists e. operations analysts Week Two: Leading Individuals Objective: Evaluate how attitudes and emotions influence behaviors. 4. Which of the following is not true concerning emotions
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where local needs where satisfied with limited resource exploitation and technological development. Whatever type of economy the cities of Vesuvius were though‚ it is clear that large amounts of wealth was being obtained through various means. Archaeologists have pinpointed out many pieces of evidence found. It has been estimated that there were around 600 privately owned shops in the city‚ around 200 public eating and drinking houses‚
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This last research was conducted by several paleontologists that discovered plenty of fossils that were mentioned as new species. First of all Pedro Boshoff discovered ancient teeth and a jaw deep underground in a chamber. While analyzing these pieces Boshoff mentioned‚ “Something bizarre is going on”
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