Answer: My gf and I broke up monday night and she didn't take it well so she tried to kill herself, I'm just really worried she'll try it again.
Explanation:
A. immune system
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Answer:
The integumentary system.
Explanation: The integumentary system is the on that is responsible for regulation and synthesis of the vitamin D. Remember this, Vitamin D for the skin is found when the sunlight has absorbed on the skin. Hope this helps!
Both of Michael Phelps and Caleb Dressel are professional swimmers ( freestyle swimming) so D
