<prompt> Ramba uchiverenga ndima iyi - Pashure pacho, Duffy akatamira kuAlaska kwaakatungamirira Alaska Heritage Program paUniversity of Alaska Anchorage. Kutsvakurudza kwake kukuru ikoko kwakanga kwakanangana nehupenyu hwehupenyu hweAlaska nzvimbo maererano nenzvimbo dzakachengetedzwa, asi akatungamirirawo makore mashanu emamiriyoni emadhora APEX Alaska Predator Ecological Experiment iyo yakatarisa kupora kwe shiri dzegungwa mushure mekudonha kwemafuta e Exxon Valdez.  <response>: . 