For the processes the manufacturer tested in March April, and May, which metais had their levels reduced by May and which metal bed no reduction in the we? Drag the appropriate metals to their respective bins. Help lead copper cadrum zing Rica Reduced levels No reduction in levels For the processes the manufacturer tested in March April, and May, which metais had their levels reduced by May and which metal bed no reduction in the we? Drag the appropriate metals to their respective bins. Help lead copper cadrum zing Rica Reduced levels No reduction in levels