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).
No they arent safe to some extent, Yes, famous baseball players have taken steroids one of the reasons they may have been so good, and im not sure about a side affect, they may get addicted, then over use it, and that could have a side affect
<span>The upper chamber is called an atrium (or auricle), and the lower chamber is called a ventricle. The two atria act as receiving chambers for blood entering the heart; the more muscular ventricles pump the blood out of the heart.</span>
True for the first
False for second
True for the third
