BIOMAGNIFICATION LAB REPORT AIM The aim of this lab is to model bioaccumulation and biomagnification through a food chain. MATERIALS 100 M&M’s Paper towel to lay M&M’s on 20 small cups labelled “zooplankton” 5 medium cups labelled “minnow” 2 larger cups - one labelled “eel #1”‚ and another labelled “eel #2” 1 bowl labelled “osprey” PROCEDURE The pile of M&M’s represents the phytoplankton population in a lake. The printed “M” on the candy represents the amount of DDT (in ppm)
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Biomagnification speech DESRIPTION OF THE ISSUE Biomagnification is the accumulation of substances‚ especially many chlorinated hydrocarbons that are used as pesticides. Common chlorinated hydrocarbons include DDT‚ dieldrin‚ and PCBs. These chemicals are insoluble in water‚ but highly soluble in organic solvents like animal fats and plant oils. Due to their insolubility‚ they are persistent in the environment and cannot be broken down by any natural processes. HISTORY OF THE PROBLEM DDT was first
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Interpretation of Data When looking at my results i can safely say that the change in HCl concentration does affect the rate of reaction with the Calcium carbonate pebbles. The relationship between the change in HCl and reaction rate can be seen in the graph and raw data table presented above. If you compare the lowest concentration with the highest concentration you’d be able to see that there is a very large contrast between their averages. The average gas production of 0.1M HCl was 0.00693 kPa/s
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Hand-out 3: Market Concentration Specification Market concentration. Definition “’Market concentration’ is the degree to which the output of an industry is dominated by its largest producers.” In other words‚ how many of the sales in the market are accounted for by the biggest firms in that market. Firm Sales (£m) % Market Share A 56 B 43 C 22 D 12 E 3 F 1 Total 100% Calculate the 3 firm concentration ratio of this market. 3 firm concentration ratio = __________________________________________________________
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of independence and survival‚ while deciphering what is essential in their fight for life: remaining civil‚ or resorting to savagery. Golding uses two of his main characters‚ Ralph and Jack‚ to symbolize a sense of civilness and savagery. Ralph represents civilization in the
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An investigation how sugar solutions of different concentrations affect osmosis. Research Osmosis is the diffusion of water across a partially permeable membrane from a dilute solution to one of a higher concentration. If a solution has a low concentration then the amount of (in the case of my investigation) sugar‚ the solute‚ will be low and the solution will be weak. If there is high amount of sugar then the solution will be concentrated (have a high concentration). When two solutions
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How does the concentration affect the rate of a reaction? 30/1/2012 By Alex Whenman Contents page 1. Introduction to my investigation 2. Background information on concentration 3. What experiment I will be conducting 4. Equipment I will be using 5. How I will be conducting the experiment 6. Heath and safety risk assessment 7. What I think will happen 8. How I will set up my experiment 9. Why I’m having my experiment set out like
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How does this text represent gender? The genre of this text is an advertisement and the audience would be females with who are between the ages of 18-30 and mainly who live in Newcastle. However this text is a dual purpose as the primary purpose would be to persuade to come and join “The gate” nightclub. And the secondary purpose would to entertain. This text uses many different and effective language techniques to represent the gender (in this case woman).One way in which this text uses language
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While the opera “Don Giovanni” of Mozart is used to denote Leopold’s influence on Mozart and Salieri’s artifice‚ “Requiem” is employed to portray Mozart’s later years and the moment of death in Amadeus. In reality‚ Mozart’s “Requiem‚” which is known as a Mass for dead – the music offered for the repose of the soul of one or more deceased persons in the context of a funeral – is a work left unfinished at Mozart’s death. Although Mozart’s Requiem was actually composed for Franz von Walsegg to commemorate
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permeable membrane through a process of diffusion. The movement of a solute through this membrane is called dialysis . Diffusion is a form of passive transport. It is the movement of molecules from areas of higher concentration to those of lower concentration‚ until there is an even concentration. This movement is random because it is a result of kinetic energy. Diffusion is a slow process‚ but there are many factors that will affect it’s rate. The rate of diffusion will vary depending on the size of the
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