The purpose of having a control when doing a lab is because it is the part that is already known and not likely to change. It is always important to have a stable variable in any experiment you do. This also helps with overlooking hidden variables so you can compare how the organisms in the control behaved differently from those in the experimental situation. The purpose of having multiple variables is to compare the difference between the outcomes with each of the different variables. It is important
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Oxygen – Carbon dioxide Cycle The Carbon Dioxide- Oxygen Cycle relates to the relationship between Carbon Dioxide [CO2] breathing plants and Oxygen [O2] breathing life forms. All oxygen-breathing life forms take in Oxygen and exhale CO2. Plants take in the CO2 and use it in their photosynthesis process and in turn give off oxygen. The Carbon Dioxide-Oxygen Cycle is a continuously occurring process whereby animals inhale Oxygen and then exhale carbon dioxide‚ and plants use the CO2 and "exhale"
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mechanical ventilation is a method to mechanically assist or replace spontaneous breathing. Mechanical ventilation‚is typically used after an invasive intubation‚ a procedure wherein an endotracheal or tracheostomy tube is inserted into the airway. It is used in acute settings such as in the ICU for a short period of time during a serious illness. It may be used at home or in a nursing or rehabilitation institution if patients have chronic illnesses that require long-term ventilation assistance
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AP Biology Dissolved Oxygen and Aquatic Primary Productivity Purpose: To measure and analyze the primary productivity of natural waters of laboratory cultures using screens to simulate the decrease of light with increasing depth. Background: Dissolved oxygen (DO) is how oxygen is measured. Oxygen is required in cellular respiration‚ so it is very important for aquatic life. When more oxygen is consumed than is produced‚ dissolved oxygen levels decline and some animals could die if they do not
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Oxygen in Liquids (DISSOLVED OXYGEN) Dissolved Oxygen – the amount of dissolved oxygen in a body of water as an indication of the degree of the health of water and its ability to support a balanced aquatic ecosystem. Oxygen – is a clear‚ colorless‚ odorless‚ and tasteless gas that dissolves in water. Small but important amounts of it are dissolved in water. OXYGEN: Aquatic Life Depends on it Plants and Animals depend on dissolved oxygen for survival. Lack of dissolved oxygen can cause aquatic
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species and origin based on morphological features by using DNA barcoding technique is an important application for molecular biology and genetics. In this study‚ we used special fish called bonito fish. These fishes generally live in relatively warm and hot seas and grow until they reach a length of about 30 inches. Bonito fish have a long pectoral fin and two dorsal fins. Also‚ they have a forked tail. Animal species and their origins can be detected accurately and quickly with the help of the technique
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On the periodic table‚ oxygen is the 8th element. It is located in period 2 and group 16. Oxygen is classified into many things. For example‚ on the periodic table‚ oxygen is classified as a nonmetal gas with an atomic number of 8 and atomic weight of 15.9994. In addition‚ it has 6 valence electrons. The symbol of oxygen is O and oxygen has 8 protons‚ 8 neutrons‚ and 8 electrons. The electron configuration of oxygen is 1s2‚ 2s2‚ 2p4. Oxygen had been produced by several chemists prior to its discovery
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Oxygen Oxygen and its compounds play a key role in many of the important processes of life and industry. Oxygen in the biosphere is essential in the processes of respiration and metabolism‚ the means by which animals derive the energy needed to sustain life. Furthermore‚ oxygen is the most abundant element at the surface of the Earth. In combined form it is found in ores‚ earths‚ rocks‚ and gemstones‚ as well as in all living organisms. Oxygen is a gaseous chemical element in Group VA of the periodic
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Oxygen sensor invention could benefit fisheries to breweries | MSU News... 1 of 1 http://news.msu.edu/story/9168/ News Site Oxygen sensor invention could benefit fisheries to breweries Contact: Layne Cameron‚ University Relations‚ Office: (517) 353-8819‚ Cell: (765) 748-4827‚ layne.cameron@ur.msu.edu Published: April 04‚ 2011 E-m ail Editor ShareThis EAST LANSING‚ Mich. — Monitoring oxygen levels in water has applications for oil spills‚ fish farming‚ brewing beer and more
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Fig. 4. Mean (± SEM) weight of pompano fish (g) fed experimental diets on days 0‚ 14‚ and 28 of the trial. Treatment diets included the basal diet‚ or the basal diet with 0.05% Macrogard (D0.05)‚ 0.10% Macrogard (D0.10) and 0.20% Macrogard (D0.20) supplementation. Data are presented as the means ± SEM. Different letters are significantly different between treatments at each time point. Table 4. Growth performance of pompano fish fed different concentration β-glucan in the diet for 28 days. Data
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