1. difference between hormones and barrier methods 2. What is the effectiveness of hormonal contraceptives?
3. Name 3 types of birth control methods

Scientists who study the anatomy of the systems in the human body focus their studies on

Where does a fertilized egg spend most of its time?

(i think the answer is either b or d can someone me? i’ll mark you brainliest) signs tell you what you can or can't do, and what you must do. a. regulatory b. warning c. guide d. construction