Which action does not cause the production of carbon monoxide? a) smoldering coals b) melting ice c) starting a bon fire d) burning tobacco

Which of these is most likely to prevent pregnancy? a. tracking of female body temperature to identify ovulation times b. proper condom use c. male withdrawal before ejaculation d. proper spermicide use

Which behavior of an expectant mother is unhealthy

Prone a. front b. back c. facing up d. facing down anterior a. front b. back c. facing up d. facing down