No
natural
They are made of a material calcium build-up and are not made of cells.or eggshell??? as it is not a man made object???
I don't think bones are made of calcium. Calcium is a nutrition that your bones need to be strong.
I don't think bones are made of calcium. Calcium is a nutrition that your bones need to be strong.
it means that it is made of calcium
Two products made from calcium compounds are chalk (calcium carbonate) and cement (calcium oxide).
Hematite is not made from calcium carbonate.
Hair and nails are made primarily of calcium.
Calcium carbonate is the compound made from the elements oxygen, calcium, and carbon. It is commonly found in rocks, shells, and pearls.
The two main man-made silicates are glass and cement. Glass is made by melting sand and other ingredients together, while cement is produced by heating a mixture of limestone and clay to high temperatures.
they are made mainly from calcium and from a few other minerals.
Assuming you are asking, "Where was calcium refined/isolated," it was made in England. If you're asking what country it was made in, as in, where did calcium first exist, no country made calcium. It's an element created by nuclear fusion in stars, and so isn't and hasn't been made by countries.