C
It is a idea which no kind of evidence is allowed to prove wrong
<span>Because iron is an element meaning that it only contains iron atoms, pure iron is easily oxidized meaning that oxygen readily reacts with the surface of the iron which causes it to rust. Therefore, since the iron joint replacement is surrounded by wet tissues would it would rust and flake off which could cause serious problems. </span>
Answer:
I suppose that oxygen bonds with the carbon and escape the molten metal in a gaseous form. Not sure about this but i tried to help.
Explanation:
Mixture is physically combined and substance is chemically combined and can only be changed in identity and properties by chemical methods
