Comparative advantage occurs when a person or a business focuses on providing one product or service they are good at true or false?

When congress limited the size of washington, dc to 10 square miles, they could not have predicted the growth of the federal bureaucracy. which of the following conditions, do you suppose, is directly related to the inability of the federal city to expand? (select all that apply.)

The difference between the lower class limits of adjacent classes provides the

Dr. redbull conducts a study to determine whether her new energy drink children perform better on spelling tests. she randomly assigns children to one of two groups: group 1 receives her energy drink and group 2 receives water. she then gives both groups a spelling test and compares the results. which of the following is true about this study? a. group 1 is the dependent variable and group 2 is the independent variable. b. this is a correlational study. c. group 2 is the experimental group. d. the independent variable is the type of drink the children receive.