THIS KID IN MY CLASS IS ANNOYING WHAT SHOULD I SAY TO HIM

Why mature red blood cells has no nucleus

Which of the following statements about the societal costs of tobacco use is true? a. tobacco use affects the tax rate of only those individuals who smoke. b. the negative effects of tobacco use are only experienced by the smoker. c. tobacco users contribute to an overall loss of productivity. d. increased healthcare costs are mainly absorbed by tobacco users

What are three cause of non-infection diseases?