Sci 207 - 891 Words

Lab 1 – Introduction to Science Exercise 1: The Scientific Method Dissolved oxygen is oxygen that is trapped in a fluid, such as water. Since many living organism requires oxygen to survive, it is a necessary component of water systems such as streams, lakes and rivers in order to support aquatic life. The dissolved oxygen is measured in units of parts per million (ppm). Examine the data in Table 4 showing the amount of dissolved oxygen present and the number of fish observed in the body of water the sample was taken from; finally, answer the questions below. QUESTIONS 1. Make an observation – Based on the data in Table 4, discuss what patterns you observe in regards to dissolved oxygen content and fish populations in†¦show more content†¦Answer = Line graphs are good for demonstrating trending analysis and also work well for comparing different data. 6. Analyze results - Graph the data from Table 4 and describe what your graph looks like (you do not have to submit a picture of the actual graph!). Answer = The first part of the graph resembles a bell shape. At the latter part of the graph it takes a sharp increase. 7. Draw conclusions - Interpret the data from the graph made in Question 7. What conclusions can you make based on the results of this graph? Answer = The graph demonstrates that as the dissolved oxygen levels increase the fish population will increase. The fish show strong growth from 6ppm to 12ppm dissolved oxygen. As the levels reach 14ppm to 18ppm the have a repeating effect as 6ppm to 12ppm.. With this being said, it shows that fish will show growth progress to a certain level of dissolved oxygen and then level off. 8. Draw conclusions – Assuming that your experiment produced results identical to those seen in Table 4, would you reject or accept the hypothesis that you produced in question 3? Explain how you determined this. Answer = My hypothesis is that there is a direct correlation between the number of ppm of dissolved oxygen in a body of water to the number of fish living in that water. References Sharma S, Jackson DA, Minns CK,Show MoreRelatedSCI 207 Quiz Essay1726 Words   |  7 Pagesï » ¿SCI 207 Quiz Week 2 Quiz – correct response is marked with asterisk (*) 1. Question: A decrease in â€Å"food miles† will most likely increase the environmental impact of any given food. True False * Question 2. Which of the following statements about ground water is not true, according to your text? Underground aquifers hold approximately 99% of all the liquid fresh water. More than 75% of underground water has a replenishment time of centuries or more, making it non-renewable. 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Antioxidant composition and activity of barley (Hordeum vulgare) and malt extracts and of isolated phenolic compounds. J. Sci. Food Agric., 79 : 1625 – 1634. Green, A. (1971). Soft fruits. In The Biochemistry of Fruits