Demarcus drinks several cups of coffee a day. often, demarcus experiences an almost immediate sense of alertness when he smells a fresh cup of coffee, even though it takes about 20 minutes for the caffeine in the coffee to reach significant levels in the bloodstream. he decides, with the encouragement of his physician, to quit drinking coffee. at first, he still experiences the alertness when he smells freshly brewed coffee, but after about 10 days, he no longer experiences the effect. that demarcus no longer experiences the alertness effect exemplifies:

When were criminals first used to create a system to catch other criminals

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.

Me! will give brainliest to whoever answers correctly! arrange the events in peruvian history in chronological order using the numbers 1-6. a. simón bolívar and antonio jóse de sucre’s defeat of spanish forces ensures peru’s independence. b. alejandro toledo is the first indigenous peruvian elected president. c. spanish conquistador francisco pizarro arrives in peru and enslaves peru's indigenous people. d. túpac amaru ii is executed, and his sacrifice inspires peruvians to seek independence and equal rights for indigenous people. e. the chaví­n culture establishes settlements high in the andes. f. attacks by rebel groups threaten democratic rule. (for example, find out the dates of the events (years) and and list them below) you for your time!