Answer:
ok
Explanation:
If you don't know why then you are sus
I'm not 100% sure on this, but from what I remember, I believe it is .02% Hope this helped!
-TTL
Answer:
The principal function of vitamin D in calcium homeostasis is to increase calcium absorption from the intestine. Calcium is absorbed by both an active transcellular pathway, which is energy dependent, and by a passive paracellular pathway through tight junctions.
Explanation:
Young people experience many changes during their tween and teen years. Building healthy food and physical activity habits will help them now and as they enter adulthood I offer resources, tips, and ideas that can help teens take charge and learn to make their own choices.