Author Question: For girls, breasts begin to enlarge during the 10th year. The breasts typically reach full size in ... (Read 189 times)

jessicacav · **on:** Jun 22, 2018

For girls, breasts begin to enlarge during the 10th year. The breasts typically reach full size in about three years, but the mammary glands do not mature fully until:

a. age 16 c. a woman has a baby.
b. menstruation begins. d. none of these

Question 2

With tertiary circular reactions:

a. trial and error is still used until an action accomplishes the goal.
b. trial and error is not needed.
c. the child will give up if something does not work the first time.
d. None of these is accurate.