 
 <prompt> Wetin dey needed for di change for chemical process? Given di previous question, write one context wey get di answer. E fit be 1 - 20 sentences. Context: <response>: ```Chromobacterium violaceum and Pseudomonas fluorescens fit mobilize solid copper, as a cyanide compound. The ericoid mycorrhizal fungi wey dey associated with Calluna, Erica and Vaccinium fit grow for copper metalliferous soils. The ectomycorrhizal fungus Suillus luteus dey protect young pine trees from copper toxicity. A sample of the fungus Aspergillus niger wey dem find dey grow from gold mining solution; and dem find say e contain cyano metal complexes; like gold, silver, copper iron and zinc. The fungus still dey play role for the solubilization of heavy metal sulfides.``` 