In yet other embodiments of the invention, the active agent is an element selected from {HEAD ~ the group} consisting of: {TAIL ~ Fe}, Ca, Mn, Mg, Cu, and Zn 
consisting of
In yet other embodiments of the invention , the active agent is an element selected from { HEAD ~ the group } consisting of : { TAIL ~ Fe } , Ca , Mn , Mg , Cu , and Zn
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH