▁pool " ▁where ▁visitors ▁can ▁touch ▁and ▁feed ▁ko i . ▁ ▁In ▁keeping ▁with ▁its ▁" green " ▁policy , ▁the ▁zoo ▁maintain s ▁its ▁own ▁se w age ▁treatment ▁system ▁and ▁uses ▁rec yc led ▁water ▁to ▁ir rig ate ▁its ▁gard ens . ▁Food ▁and ▁animal ▁waste ▁are ▁mixed ▁with ▁plant ▁material ▁and ▁placed ▁in ▁large ▁comp ost ▁p iles ; ▁the ▁comp ost ▁is ▁used ▁to ▁fert il ize ▁the ▁trees ▁and ▁shr ubs . ▁The ▁zoo ▁s ells ▁its ▁organ ic ▁comp ost ▁in ▁the ▁gift ▁shop . ▁In ▁ 2 0 0 6 ▁re cept acles ▁for ▁collect ing ▁used ▁pl astic ▁drink ▁bott les ▁were ▁installed ▁next ▁to ▁each ▁of ▁the ▁sn ack ▁bars , ▁and ▁used ▁batter ies ▁are ▁collected ▁at ▁the ▁gift ▁shop . ▁To ▁reduce ▁carbon ▁em issions ▁and ▁traffic , ▁the ▁zoo ▁sched ules ▁the ▁use ▁of ▁delivery ▁and ▁security ▁vehicles . ▁ ▁Research ▁The ▁Jerusalem ▁Bib lic al ▁Z oo ▁particip ates ▁in ▁national ▁and ▁international ▁research ▁projects ▁in ▁the ▁fields ▁of ▁zo ology , ▁bi ology , ▁and ▁environmental ▁science , ▁and ▁publish es ▁papers ▁in ▁journ als ▁and ▁at ▁scientific ▁meet ings . ▁Through ▁its ▁Ah aron ▁Sh ul ov ▁Fund ▁for ▁the ▁Study ▁of ▁Anim als ▁in ▁Capt ivity , ▁it ▁also ▁provides ▁gr ants ▁for ▁research ▁on ▁animal ▁w elf are ▁and ▁husband ry , ▁animal ▁re int roduction , ▁reprodu ction ▁of ▁end anger ed ▁species , ▁conservation ▁gen et ics , ▁and ▁ex otic ▁animal