Biology
SandyKassell
2015-11-02 10:25:18
As a child, Alex was short for his age. But during his teenage years, his height increased and he surpassed most of his friends. What must have occurred to create this growth spurt?
ANSWERS
almightyree
2015-11-02 14:08:34

He began puberty and HGH (human growth hormone) kicked in along with testosterone.

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