Answer:
for boys
the external genitals will start to grow.
public hair will start to grow.
a growth spurt occurs
adams apple or voice box will become more obvious
the voice changes
the body shape will change.
Explanation:
for girls
breast will start developing.
a growth spurt occurs.
the body shape will change
the external genitals(vulva)and public hair will start to grow
hair start to grow under arms
