Puberty begins when the pituitary gland secretes pituitary into the bloodstream to affect the sex organs.
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Answer:
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Answer:
A genetic disorder, in which the lungs and the digestive system get clogged with mucus.
Cystic fibrosis is caused by a change (mutation) in the gene
or inherited
Explanation:
Hydration!!!!!!!!!!!I think
DNA contains information that determines a cell's purpose and function.
