Answer:
Development that takes place before the age of nine.
Primary sexual characteristics appear at birth and comprise both the external and internal genitalia (e.g., the penis and testes in men and the vagina and ovaries in women).
Answer:
"Studies have shown that when viewing images of someone that you find attractive it can illicit a nonverbal response of pupil dilation."
Explanation:
"breaking a habit" means to stop doing a particular behavior for good.
Habit is a behavior that you constantly do. An example of this is biting your nails when you are nervous.
"Breaking a habit" is to stop biting your nails when you are nervous. Instead you divert your attention into doing something else when you are nervous instead of biting your nails.