The element iron has ceased to exist. What happens?

NEVER. The conservation of energy states that energy can neither be created or destroyed, only transformed from one form to another. Although one element's atom may not be present anymore, that DOES NOT mean it has ceased to exist, rather it has been transferred to serve some other purpose. read more

You die within a few minutes from respiratory failure because your blood can’t absorb or bind to oxygen. Anything that relies on steel for structure falls apart. read more

If we didn't have iron in our body, we will die. Iron is one of the big components of hemoglobin, the essential protein found in erythrocytes. read more