Mark’s dentist gives him a shot before performing a root canal. the dentist says the shot is anesthesia and that mark won't feel any pain. mark feels his gums going numb, while the rest of his body is working fine. what has the anesthesia actually done?

How can an organ, such as the lungs, work for multiple body systems?

Along what geographical feature are most of the oil producing regions located

Aresearcher created three groups based on participants bmi: normal weight, overweight and obese. the hypothesis being tested is that the three groups differ in the mean number of artificially sweetened drinks consumed weekly. which statistical test might the researcher use, assuming a reasonably normal distribution of values.