It is not true...
if copper is ingested it can cause a blood disease.
In ores. Copper ores are found in various parts of the world. Copper can be found as a metal in the ground. Normally, it is green on the outside. Most copper is not as a metal but in chemical compounds. Chalcopyrite is the most common copper ore. It is a mixture of pyrite and copper sulfide. Copper is found in small amounts in living things. Some mollusks and arthropods have blue blood because they have copper in their blood. Animals such as humans and other mammals have red blood because it contains iron. Copper is purified by electrolysis. Electricity is passed through solutions containing copper compounds, such as copper sulfate - sometimes spelt sulphate. Pure copper forms on the negative electrode.
Iron if it's a hemoglobin based blood cell (then the blood is red). If it's hemocyanin then it's copper and the blood will be blue. Like the people of Pandora.
Blood tastes like copper because it contains iron, which gives it a metallic flavor similar to the taste of copper.
there is copper in its blood
Octopuses have copper and magnesium in their blood.
copper
The blood protein that transports copper is ceruloplasmin. Ceruloplasmin helps regulate copper levels in the body by binding to copper and transporting it to where it is needed, such as to the liver for storage or to cells for use in various biochemical processes.
blood
one way is that their blood is blue because the blood has copper in it copper is a metal
That's just nature. If it were'NT nature i'd have like pink-blue blood and you would have like black blood....
because they have copper in their blood instead of iron.