Which of the following energy sources is not a type of coal or coal-precursor?

Is a short-term risk associated with tobacco use. a. lung cancer b. heart disease c. stroke d. coughing

If your goal is to improve your person relationships with your friends at school, which category would it fall into? a. physical b. emotional c. social d. academic

Summarize four pregnancy-prevention methods. discuss the benefits effectiveness and risks of each