Calcium is one of the most important minerals for the human body. It helps form and maintain healthy teeth and bones.
...
Function
-Building strong bones and teeth.
-Clotting blood.
-Sending and receiving nerve signals.
-Squeezing and relaxing muscles.
-Releasing hormones and other chemicals.
-Keeping a normal heartbeat.
"D" conserve resources.
The 3 R's were made to help people use and conserve resources wisely.
I hope this helps!
~kaikers
