Repeating an interviewer's questions may be best described as a sign of

Rank the following from most to least devasting: ordovician,permaian,cretaceous, pleistocene

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.

Economic growth in the united states does not affect the economies of other countries. select the best answer from the choices provided t f