The successful launch of sputnik i was the first instance of what?

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.

Explain the correlation between industrialization and urban areas

According to the aztec history, how did the aztecs know where to build their new city of tenochtitlan? why was this a good location?