a.VOCABULARY Prehistory can refer to the period of human existence before the availability of those written records with which recorded history begins. Fossils are the preserved remains or traces of animals (also known as zoolites)‚ plants‚ and other organisms from the remote past. artifact or artefact is "something made or given shape by man‚ such as a tool or a work of art‚ esp an object of archaeological interest". A nomad is a member of a community of people who move from one place to
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75). Therefore‚ it is possible to obtain helpful data without harming vertebrates. One possibility is to incorporate coelenterate hydra‚ a type of freshwater organism that can be used to determine the presence of chemicals. In addition‚ insects‚ crustaceans‚ flatworms‚ and earthworms may be used (Monamy‚ 2000‚ 75). The third alternative is to utilize non-biological replacements. These can include mathematical models and computer software. According to Heidi Welsh in Animal Testing and Consumer Products
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Defn:Dengue Haemorrhagic Fever(DHF) are acute febrile diseases transmitted by mosquitoes‚ which occur in the tropics‚ can be life-threatening‚ and are caused by four closely related virus serotypes of the genus Flavivirus‚ family Flaviviridae.It was identified and named in 1779. It is also known as breakbone fever‚ since it can be extremely painful. Causative Agent: . Dengue is transmitted to humans by the Aedes (Stegomyia) aegypti or more rarely the Aedes albopictus mosquito. The mosquitoes that
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Nile Perch in Lake Victoria By Andrew .m Introduction Lake Victoria is largest lake in Africa‚ seventh largest in the world by volume. And second largest freshwater lake in the world. The lake is surrounded by three different country’s Tanzania‚ Uganda and Kenya. Figure 1 depicts Lake Victoria and the surrounding countries. All three countries share the lake and its resources‚ but one of the biggest issues is that the governing laws involving the resources and the lake regulations
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The family Labridae‚ otherwise known as wrasses‚ is marine fish consisting of more than 575 species found in warm-temperate and tropical reefs around the globe (Wainwright et al. 2004). Of all of the coral reef fishes worldwide‚ the family Labridae is one of the most morphologically diverse (Westneat 1995). Due to their different morphologies‚ different fishes within the species prey on different types of food. The main difference making up the separate morphologies‚ and subsequently feeding habits
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Did you know that the frog species were the first animals with vocal cords? Did you know that seahorses are actually fish not little serpents or mermaids as legend tells us‚ and that it is the male who becomes pregnant‚ not the female? Did you know that an area of a rainforest the size of a football field is being destroyed each second? If not‚ then you should definitively consider making a visit to the National Aquarium in Baltimore. Dramatic architecture and bright outdoor graphics invite you to
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We discussed 17 topics regarding about biotechnology. The first topic is about the history of biotechnology. Biotechnology began 7000 BC. It is the application of scientific engineering principles to the processing of materials by biological agents to provide goods and services. It is also a technique that uses living organisms (or parts of organisms) to make or modify products‚ to improve plants or animals‚ or to develop microorganisms for specific uses. Karl Ereky is the one who coined biotechnology
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Assignment 2: Field Survey of Wild Goose Run Pearson Dudezki ID#: 0786051 Field surveys are an important aspect concerning protecting natural environments as well understanding how an ecosystem functions. I decided to do my field survey on Wild Goose Woods located in the University of Guelph’s Arboretum. The Arboretum was founded in the early 1970’s and has developed into an array of botanical gardens‚ walking trails and conservation programs. Administrative Information The Arboretum is publically
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Harmful Algal Blooms and how they are Linked to Aquaculture Abstract Harmful algal blooms cause a wide range of negative effects on aquaculture. These effects are come from the complexity of harmful algal species; the toxins they create and morphology they have adapted. Science still lacks a full understanding of factors that are envolved in blooms formation. Aquaculture and harmful algal blooms are directly related because it is one of many anthropogenic factors that unintentionally produce the
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Abstract Carbohydrates are the most abundant organic compounds in the plant world. They act as storehouses of chemical energy (glucose‚ starch‚ glycogen); are components of supportive structures in plants (cellulose)‚crustacean shells (chitin)‚ and connective tissues in animals (glucosaminoglycans); and are essential components of nucleic acids (D-ribose and 2-deoxy-D-ribose). Monosaccharides‚ oligosaccharides‚ and polysaccharides are theclassifications of carbohydrates. This experiment involves
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