What's New This activity shows that there are common and unique characteristics among boys and girls. Is this me? Write the changes that happen to boys on the left circle and changes that happen to girls on the right side. While on the center area of the circle, write the changes that may happen to both boys and girls. Choose your answer in the box below Changes that happen to boys ONLY Changes that happens to BOTH Changes that happen to girls ONLY Hair grows on the genital region The voice becomes deeper The hips become wider than the shoulders Muscles develop rapidly |Breasts develop The adam's apple becomes bigger Have you gotten it all right? If your answer is No, don't worry the next lesson will give you understanding of the changes that may happen to adolescents like you as you grow older. 5​