The invention provides methods and compositions for heavy metal phytoremediation, including plants which are genetically engineered to overexpress glutamylcysteine synthetase and thereby provide enhanced heavy metal accumulation. The cavity has at least one broader zone having a cross-section which is greater than the cross-section of the cavity at said surface. These elastomer compositions can be used in any one or more portions of the golf balls, such as inner center, core, inner core layer, intermediate core layer, outer core layer, intermediate layer, cover, inner cover layer, intermediate cover layer, andor outer cover layer. The first target structure provides for holding objects to be struck, such as boards or bricks, in a choice of pivoted positions, the first target structure fittable to the horizontal in a plurality of rotated positions, thereby providing for a user to ideally position the object to be struck. The latter \u201ccollection\u201d of printers is then treated as a cluster to which a scanned document is appropriately sent for implementation of that job.