2007-05-28 06:33:46 · 8 answers · asked by kmachuca930 2 in Science & Mathematics ➔ Earth Sciences & Geology
Calcium is everywhere. There is a massive calcium 3 deposit in Iowa. It is in limestone rock and machines dig it out. There it is ground up and sprayed into food to fortify it.
2007-05-28 06:41:09 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Calcium is found in limestone rocks , sea shells, medical shops
2007-05-28 07:08:36 · answer #2 · answered by Muthu S 7 · 0⤊ 0⤋
Marble, limestone, and shells of mollusks are all calcium carbonate. There animal sources for calcium phosphate.
2007-05-28 06:40:30 · answer #3 · answered by A.V.R. 7 · 0⤊ 0⤋
And, related to limestone, the shells of aquatic animals like clams and snails. They make their shells out of calcium carbonate, which forms limestone beds when the creatures die.
2007-05-28 06:38:19 · answer #4 · answered by Lady Geologist 7 · 0⤊ 0⤋
.Bone has Calcium source.
2007-05-28 06:39:39 · answer #5 · answered by Tuncay U 6 · 0⤊ 0⤋
In limestone for one
2007-05-28 06:36:45 · answer #6 · answered by zoot 3 · 0⤊ 0⤋
http://en.wikipedia.org/wiki/Earth#Chemical_composition
2007-05-28 06:37:55 · answer #7 · answered by lil' 2 · 0⤊ 0⤋
Bones and milk.
2007-05-28 11:15:44 · answer #8 · answered by Anonymous · 0⤊ 0⤋