Per favore aiutami, non so come fare il mio lavoro scolastico, qualcuno può aiutarmi perché è davvero difficile

Explain the significance of thesaurus geographicus

During an experiment, readings for blood pressure in a persons body were found to be constant . however , when he measured by a different blood pressure cuff , the readings differed by 15 points for each reading. this difference indicates that the results are

Which of the following is a limitation of a clinical trial? a.)amount of random assignments b.)hospital cost c.)number of test tubes d.)amount of peer review