<span>the phosphorus cycle
Hope it helps! :)</span>
The answer is Vestigal.
It is a type of anatomical structure that no longer serves any function.
Over time they are no longer needed in the body. Apart from the wisdom tooth, another example
would be the tail bone which has no use for humans.
Answer:
Cobalt Co
Explanation:
Co and Zn can fully replace each other, except perhaps for small individual requirements that are met by minute metal concentrations supplied as contaminants.