Rats are various medium sized rodents. "True rats" are members of the genus Rattus‚ the most important of which to humans are the black rat‚ Rattus rattus‚ and the brown rat‚ R. norvegicus. Many members of other rodent genera and families are also called rats and share many characteristics with true rats. A rat has an average life span of 2-3 years[1]. Rats are distinguished from mice by their size; rats generally have bodies longer than 12 cm (5 in). Contents [hide] * 1 Species and description
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love the peace of mind knowing there weren’t rats lurking in your walls? Rats create many problems in the world and I believe we should eliminate all rats. One reason rats need to be eliminated is they spread diseases. According to CDC (Centers for Disease Control) rats spread hemmoragic fever‚ Lassa fever‚ Leptospinosis‚ and many more. Having rats running around infected with possibly fatal diseases is far too dangerous. To emphasize the deadly effect rats have‚ we can look at the Black Plague‚ in
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SNIFFY THE VIRTUAL RAT EXPERIMENT By Cassidy Blaikie 200407994 A laboratory report Presented to Jennifer Gauthier In Psychology 210 Learning Psychology Department of Psychology St. Francis Xavier University February 23‚ 2007 Abstract The purpose of this experiment was to test whether training a simulated rat under a Partial Reinforcement Schedule took longer to extinguish than being trained in a Continuous Reinforcement Schedule. The subject involved was a computer based rat. The rat was trained
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magnitude on extinction as indicated by Sniffy the rats’ bar pressing. This experiment conducted three different experiments to determine these results‚ all of which involved continuous reinforcement to teach Sniffy to learn to press the bar for food pellets. It was predicted that Sniffy is likely to learn to extinguish the behaviour that is learned faster when the level of punishment is higher. The first experiment went through an extinction trial and Sniffy was not given food following the bar press;
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pg. 462-464 a) Draw a diagram of the rat when it is first cut opened and the internal organs are exposed. Identify and label the diaphragm‚ the stomach‚ the small intestine‚ the caecum‚ the heart‚ the left and right lung‚ the trachea and the esophagus. (Note: see Figure 22 on pg 470 for an example) b) What structure divides the thoracic and abdominal cavities? The Diaphragm divides the thoracic and abdominal cavities. c) What is the sex of your rat? Male. Part C Digestive System pg 467
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Black Rat Biology Honors Paper The Rattus Rattus (black rat) is one of the most problematic invasive species in the world. Covering 80% of all archipelagos and are found on six continents. Black rats are mainly found on tropical islands such as the Galapagos‚ Hawaii and most of the islands in Central America. Rats prefer to live in areas filled with forests and shrubland‚ but can live on minimal vegetation. Scientists have been able to exterminate this invasive species from most temperate and sub
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RAT POW Problem Statement: I this POW we were assigned to find the population of the exponential growth of a rat population‚ residing on a perfect‚ utopian island after a year. Organisms will flourish prosperity on the Island and no deaths would occur. The journey began when merely 2 full-grown rats‚ the one original male and female‚ arrived on the island. Their offspring would be determined by the following: Every day from January 1st‚ the original mother would give birth to a liter of
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Rat Dissection Prelab 1. Is your left like your right side? It should be similar to your right but there can be differences like if damage was done to one side or if one side was mutated and disfigured. 2. Name an animal that doesn’t have a left and right side. Snakes don’t have a left and right side but there is an interesting study about that which is that Adult snakes (16 of 20 snakes) preferred to coil in the clockwise direction. Many female snakes (15 of 20 snakes)‚ but few male
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u win the rat race you are still a “RAT”!!!!!!!!!! long work hours‚ unpaid overtime‚ stressful job‚ time spent commuting‚ less time for family life and/or friends life is the common problem shared by almost everyone on this planet.Here rat race is a very common attribute to describe the dull‚ endless & monotonous lifestyle of the new generation which makes them aloof of the relatives‚ friends and a more enthusiastic and encouraging life. Rat race describes the mad behaviour of a rat running endlessly
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Brad Picard Mrs. Brousseau English 12 3 January 2013 The Genre of Horror: The Rats in the Walls The Rats in the Walls by H.P. Lovecraft is a horror story that portrays the overall mindset of a man who is trying to restore Exham Priory and the reputation of his family and ancestors from centuries ago. Delapore is a wealthy man who wants to rebuild his family home‚ even against the several horrible stories told by local villagers and his friend Capt. Norrys. Once his restoration of
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