Brainliest
which components make up the endocrine system?

stomach and intestines

glands and hormones

heart and blood vessels

brain and spinal cord

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.

Which option below best represents what is included in the calculation of the united states gross domestic product (gdp)? a. 1 b. 2 c. 3 d. 4

Name that largest artificial lake built in the 11th century