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If m cda= 111° then m abc=
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abc =121 ans for above question
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Early Human Migrations
Early Human MigrationsIntroductionThe fossil and genomic record tell us that our species originated in Africa around 200,0 ...
Early Human Migrations
Early Human MigrationsIntroductionThe fossil and genomic record tell us that our species originated in Africa around 200,000 years ago (These numbers might now go back further). The first 100,000 years were spent in Africa and soon after our species began to expand into different world regions.What you are doingYour task will be to explore the complex fossil and genetic history of modern humans as they left Africa for the first time. For this webquest you will only be able to choose one of the following world regions: The Americas (you will be including both North and South) AustraliaEuropePacific IslandsAll the above world regions have complicated population histories that are the result of a number of populations that have come together to form the present population. What insight do genomic studies of ancient fossils and modern populations give us in reference to the number of founding populations that form your chosen world region?Before you begin your task make sure you do the following thingsUse the following links to help you with your webquest.Native American Genetics (Links to an external site.)Links to an external site.European Genetics (Links to an external site.)Links to an external site.Austronisian Genetics (Links to an external site.)Links to an external site.South Pacific Genetics (Links to an external site.)Links to an external site.What you have to do for pointsAll of the assigned world regions are composed of multiple Homo sapiens populations that arrived at different times to the current world region that you are exploring. What do genomic studies of ancient fossils and modern populations give us in reference to the number of founding populations of your chosen world region and what does the data say about when the different populations arrived?Make sure you give citationsTips for successPlease keep your answer to only what is asked in the assignment.I recommend composing your content offline in a text editor and then copy and paste the text into your reply post. If something happens you will have an offline copy of all of your hard work!
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moraine Valley Community College Modeling Disease Transmission Lab Report
Fill out document that is attached with this question. Note: It is suggested that you perform this experiment with a minim ...
moraine Valley Community College Modeling Disease Transmission Lab Report
Fill out document that is attached with this question. Note: It is suggested that you perform this experiment with a minimum of one and a maximum of seven assistants who are able to follow the exact directions you will give them. If no assistants are available, the lab may be performed alone.ProcedureRead each of the following steps before beginning.Locate the 8 clear plastic 9 oz. cups provided in your kit and place the cups in a line.Pour the entire 30-mL bottle of sodium hydroxide (NaOH) into the first cup. The NaOH will act as the disease-causing microorganism.Use the tablespoon-size measuring spoon to add exactly 2 tablespoons of distilled water to each of the remaining 7 cups.Warn your assistant(s) that any of the cups may contain a strong base, NaOH. They must be very careful in handling all solutions.Have an assistant rearrange the cups without anyone else watching. Rearrange the cups yourself so that no one knows which cup holds the pathogen.Form a hypothesis about the number of cups that will contain the “disease-causing microorganism” at the end of this experiment. Record the hypothesis in Data Table 3.Make the following announcement to the assistant(s):“The following activity will simulate the spread of a disease-causing microorganism at a luncheon. One individual at the luncheon has contracted the disease within the previous 24 hours. However, this individual is unaware of the disease because they have not begun to exhibit symptoms. During the luncheon, many individuals are sharing and tasting the beverages and food. To simulate sharing of beverages at the luncheon, you will mix the beverage I am about to hand you with 3 different people. To mix beverages, carefully pour all of the contents of your cup into another person’s cup. The person with the full cup will then pour ½of their cup’s contents back into your cup. Share drinks with a total of 3 people. It is very important that no one actually drinks any of the “beverages.”Note: If you have only 1 assistant or are performing the exercise alone, this activity can be simulated by randomly mixing each beverage 1 time with 3 other cups, until each cup has been switched. Have the assistant(s) begin the exercise, mixing the solutions.When all solutions have been mixed, use scissors to snip off the tip of the phenolphthalein pipet.Carefully dispense 3 drops of phenolphthalein into each cup.Phenolphthalein will act as a test for the disease; pink indicates a positive test result. Identify which solutions test positive for the disease.Note: Phenolphthalein is an acid-base indicator which will change from colorless to pink at a pH between 8.2 – 10.0. In other words, phenolphthalein will turn pink in the presence of bases, such as NaOH.Complete Data Table 3, answering each of the following:The number of beverages at the luncheon.The number of people who arrived at the luncheon with a contagious disease.The percent of people who began the luncheon with the infectious disease; this is the number of people who began the exercise with a contagious disease divided by the number of beverages.The number of people who contracted the contagious disease by the end of the luncheon.The percent of people who contracted the contagious disease; this is the number of people who ended the exercise with a contagious disease divided by the number of beverages.Cleanup:
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Most Popular Content
Early Human Migrations
Early Human MigrationsIntroductionThe fossil and genomic record tell us that our species originated in Africa around 200,0 ...
Early Human Migrations
Early Human MigrationsIntroductionThe fossil and genomic record tell us that our species originated in Africa around 200,000 years ago (These numbers might now go back further). The first 100,000 years were spent in Africa and soon after our species began to expand into different world regions.What you are doingYour task will be to explore the complex fossil and genetic history of modern humans as they left Africa for the first time. For this webquest you will only be able to choose one of the following world regions: The Americas (you will be including both North and South) AustraliaEuropePacific IslandsAll the above world regions have complicated population histories that are the result of a number of populations that have come together to form the present population. What insight do genomic studies of ancient fossils and modern populations give us in reference to the number of founding populations that form your chosen world region?Before you begin your task make sure you do the following thingsUse the following links to help you with your webquest.Native American Genetics (Links to an external site.)Links to an external site.European Genetics (Links to an external site.)Links to an external site.Austronisian Genetics (Links to an external site.)Links to an external site.South Pacific Genetics (Links to an external site.)Links to an external site.What you have to do for pointsAll of the assigned world regions are composed of multiple Homo sapiens populations that arrived at different times to the current world region that you are exploring. What do genomic studies of ancient fossils and modern populations give us in reference to the number of founding populations of your chosen world region and what does the data say about when the different populations arrived?Make sure you give citationsTips for successPlease keep your answer to only what is asked in the assignment.I recommend composing your content offline in a text editor and then copy and paste the text into your reply post. If something happens you will have an offline copy of all of your hard work!
3 pages
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Chemistry 121 Virtual Lab: Identifying the Unknown Metal (Metals Density Problem) 1. Click on the “Metal Density Problem ...
Chemistry
Chemistry 121 Virtual Lab: Identifying the Unknown Metal (Metals Density Problem) 1. Click on the “Metal Density Problem” link above to begin your ...
4 pages
Density
The density of a substance is a measure of how much mass into a certain volume of the substance. Substances with a high de ...
Density
The density of a substance is a measure of how much mass into a certain volume of the substance. Substances with a high density, like steel, have ...
moraine Valley Community College Modeling Disease Transmission Lab Report
Fill out document that is attached with this question. Note: It is suggested that you perform this experiment with a minim ...
moraine Valley Community College Modeling Disease Transmission Lab Report
Fill out document that is attached with this question. Note: It is suggested that you perform this experiment with a minimum of one and a maximum of seven assistants who are able to follow the exact directions you will give them. If no assistants are available, the lab may be performed alone.ProcedureRead each of the following steps before beginning.Locate the 8 clear plastic 9 oz. cups provided in your kit and place the cups in a line.Pour the entire 30-mL bottle of sodium hydroxide (NaOH) into the first cup. The NaOH will act as the disease-causing microorganism.Use the tablespoon-size measuring spoon to add exactly 2 tablespoons of distilled water to each of the remaining 7 cups.Warn your assistant(s) that any of the cups may contain a strong base, NaOH. They must be very careful in handling all solutions.Have an assistant rearrange the cups without anyone else watching. Rearrange the cups yourself so that no one knows which cup holds the pathogen.Form a hypothesis about the number of cups that will contain the “disease-causing microorganism” at the end of this experiment. Record the hypothesis in Data Table 3.Make the following announcement to the assistant(s):“The following activity will simulate the spread of a disease-causing microorganism at a luncheon. One individual at the luncheon has contracted the disease within the previous 24 hours. However, this individual is unaware of the disease because they have not begun to exhibit symptoms. During the luncheon, many individuals are sharing and tasting the beverages and food. To simulate sharing of beverages at the luncheon, you will mix the beverage I am about to hand you with 3 different people. To mix beverages, carefully pour all of the contents of your cup into another person’s cup. The person with the full cup will then pour ½of their cup’s contents back into your cup. Share drinks with a total of 3 people. It is very important that no one actually drinks any of the “beverages.”Note: If you have only 1 assistant or are performing the exercise alone, this activity can be simulated by randomly mixing each beverage 1 time with 3 other cups, until each cup has been switched. Have the assistant(s) begin the exercise, mixing the solutions.When all solutions have been mixed, use scissors to snip off the tip of the phenolphthalein pipet.Carefully dispense 3 drops of phenolphthalein into each cup.Phenolphthalein will act as a test for the disease; pink indicates a positive test result. Identify which solutions test positive for the disease.Note: Phenolphthalein is an acid-base indicator which will change from colorless to pink at a pH between 8.2 – 10.0. In other words, phenolphthalein will turn pink in the presence of bases, such as NaOH.Complete Data Table 3, answering each of the following:The number of beverages at the luncheon.The number of people who arrived at the luncheon with a contagious disease.The percent of people who began the luncheon with the infectious disease; this is the number of people who began the exercise with a contagious disease divided by the number of beverages.The number of people who contracted the contagious disease by the end of the luncheon.The percent of people who contracted the contagious disease; this is the number of people who ended the exercise with a contagious disease divided by the number of beverages.Cleanup:
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