Which of the following best illustrates the importance of addressing the three questions of economics? people’s desires and needs are always changing. businesses need to use limited resources wisely. traditional methods of production are outdated. businesses need to limit production.

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.

Does the amount of material present affect its intensive or extensive properties? explain.

On the map above, what is the name of the island to the west of letter b?