The oxygen in your blood is held by ? In the ?

Which term defines one's age as measured by how well the body is working? chronological age biological age social age mental age

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.

Ay i hate cuz my peepee be small