Enrique has smoked marijuana for more than 20 years but has never felt an urge to try other drugs. he used to drink alcohol as well, but found that he enjoyed himself better and had fewer negative physical consequences when he did not drink. what argument related to the idea that marijuana users graduate to harder drugs does enrique’s story contradict?

Which statement best illustrates that problem solving can create new medical devices? robert hooke was in charge of verifying the information that was sent to the royal academy. william harvey did experiments with apes to learn about the circulatory system. the stethoscope was invented because the physician did not want to put his head on women's chests to listen to their heart and lungs. anton van leeuwenhoek was a very curious man and looked at just about everything under this microscope.