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For my project that Im doing for biology Im doing a dissection Im going to be performing my project with Trevor Johnson Tyler McCaskill and Tom Shudt The dissection that we decided to do was the dissection of a male and female sharkWe are doing a dissection on a shark because we want to learn about the shark anatomy and the way the sharks organs work to keep all the water out and still eat fish while they are swimming around in the oceanWe also want to know how the sharks skin is so resistant to cancer We also wanted to know a little bit about the shark so maybe if we decide to go into the field of Marine Biology we would have a little more knowledge on what the jobs in that field are like I also thought that it would be interesting to dee a shark up close and in person because we either have to go to the ocean or to an aquarium just to see a sharkWhen the word Shark comes to mind most people think of a monster that feeds on humans and is an enemy of all living beings Contrary to popular belief less than 10 percent of sharks are known to attack humans unprovoked Sharks are classified under the class of Chondrichthyes which is fish that have characteristics of a skeleton made of cartilage jaws paired fins and paired nostrils The superorders are divided into two groups which are Batoidea that have rays and their relatives and Selachii which are sharks Scientists have found isolated spines teeth and scales that appeared 350 to 400 million years ago in the Devonian Period known as Age of Fishes Most modern sharks have evolved 100 million years ago when dinosaurs lived on earth Matthews 1989 Sharks have been known to inhabit tropical and temperate seas as well as some cold and polar seas Migration of sharks
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