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Humans need calcium and vitamin D to keep bones healthy.
vitamin k.
Calcium
calcium is essential for teeth and bones
Vitamin D is essential to our bones because it provides them with calcium. Bones are made stronger with calcium. Calcium is obtained through vitamin D to the bones, and that is why vitamin D is essential.
Calcium!
Vitamin D
It doesnt matter cause you can get vitamin D from the sun.
Vitamin D and Calcium
healthy skin and strong bones
they can help have stronger bones and be healthy!
Calcium and Vitamin D. They are both needed to allow for healthy bones and teeth.