To prevent the possibility that a placebo effect or researchers' expectations will influence a study's results, scientists employ: control groups control groups experimental groups experimental groups random assignment random assignment the double-blind procedure

Growth of the business (be sure to use the terms “culture” and “cultural diffusion” in this section.) of debbie fields. plz me

During the early period of spanish colonialism, the death of large numbers of native people led to what

75 points!me! imagine that you are a reporter for your hometown paper during the civil war. you are writing about any one of the major battles of the civil war. in two to three paragraphs, explain what strategies the commanders are using, who wins the battle, and why. don't copy and paste the answer from the other question just like this on this site.