Argument for using a computer With the popularity of computers‚ almost every family has one computer. Some parents‚ for various reasons‚ let children use computers for learning‚ relaxing‚ and so on. However‚ children between ages of 6 and 16 are in the growth stage. Simply playing for a couple of minutes is acceptable‚ while using computers for a long time should be discouraged for that it will do harm to children’s eyes‚ discipline‚ self-control and physical growth‚ which mainly reflects in the
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Osmosis is the diffusion of free water molecules from a region of high concentration to a region of low concentration across a partially permeable membrane. Osmosis is complete when all of the water molecules have been evenly spread out and can take place either in plant cells or animal cells‚ so long as a partially permeable membrane is present. Osmosis can also be conducted in the visking tubing experiment‚ where the visking tubing is an artificial permeable membrane. So how does Osmosis take place
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Practical 1- An experiment to observe the features of an Onion Cells Method: Gather all equipment that will be used for the experiment and check that they are clean and undamaged. Using forceps‚ peel the membrane from the underside of a small piece of onion. Place the membrane flat on a clean‚ glass slide and add one drop of iodine solution. Use a pin to carefully lower the cover slip over the slide‚ ensure there are no air bubbles before the use of the slide. Set the microscope to its lowest
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VII. Conclusion The hypothesis that if a potato is placed in a tube with different sucrose concentrations then the tube with the lowest concentration of sucrose will expand the potato the most because the water will move into the potato to even out the concentration levels of the sucrose/ water ratio inside and outside of the potato was supported by the data. The data shows that the potato submerged in the lowest concentration of the sucrose water solution had the greatest percent change in mass
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Statistics – Lab Week 2 Name:Michael Jacks Math221 Statistical Concepts: * Using MINITAB * Graphics * Shapes of Distributions * Descriptive Statistics * Empirical Rule Data in MINITAB * MINITAB is a powerful‚ yet user-friendly‚ data analysis software package. You can launch MINITAB by finding the icon and double clicking on it. After a moment you will see two windows‚ the Session Window in the top half of the screen and the Worksheet or Data Window in the bottom
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Using a spirometer to investigate human lung function The purpose of this activity is: • to show how a spirometer can be used to find the vital capacity of lungs and to calculate important subdivisions of this capacity. • to show how to interpret the trace resulting from use of a spirometer • to consider how to use a spirometer to estimate metabolic rate. Procedure SAFETY: Do not use a spirometer unless supervised by a teacher. If you are using the spirometer and you experience
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Biology Hl lab report: Topic: Osmosis of potatoes in different sucrose solutions. The aim of this experiment is to test whether more water moves out of a potato when it is placed in a sweeter sucrose solution than a potato in a less sweet solution. The hypothesis of the experiment is that we expect more water to move out of the potato placed in the sweet solution than the potato placed in a less sweet solution. Independent variable: concentration of sucrose‚ concentrations: pure water
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October 9‚ 2013 Using Their Resources I am not a poor inner city kid. I am a teenage white girl who comes from a middle class white background. So life is easier for me. But that doesn’t mean that the succession is impossible for those kids from the inner city. It doesn’t mean that there are no opportunities for them. I believe that everyone in this country has a chance to succeed. Even a poor inner city kid in Kansas City. It takes brains. It takes hard work. It takes a little luck‚ and
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Nowadays everybody is talking about the internet‚ a century creation‚ which has converted the whole world into a single home. The use of internet has turned our lives to be much easier and comfortable. It is found that in 1990s the adolescents used the internet primarily for entertainment but at present they use it for interpersonal communication. Opportunities for youths to form‚ maintain and develop relationships on the internet have multiplied in the past few years. Along with the increase in
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Using the Blu-Ray vs DH DVD example‚ and other sources‚ provide advice to a chief executive officer of a firm for the best strategy to deal with a standard battle Candidate Number: 69619 Word Count: 1569 In the VCR market‚ although Betamax format of Sony was the technologically superior t VHS formats of JVC‚ there were still many factors that led to the dominance of VHS over Betamax. Firstly‚ the recording length is a major factor. Compared with the original Sony Betamax video recorder which could
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