Dee ihe na-aga n'ihu maka paragraf a - Mgbe nke ahụ gasịrị, Duffy kwagara Alaska ebe ọ na-eduzi Mmemme Nketa Alaska na Mahadum Alaska Anchorage. Nnyocha ya bụ isi ebe ahụ lekwasịrị anya na biodiversity nke ala Alaska n'ihe metụtara ebe ndị echedoro, mana ọ na-edukwa APEX afọ ise nke ọtụtụ nde dollar (Alaska Predator Ecological Experiment) nke na-enyocha mgbake nke nnụnụ mmiri na-esote mmanụ mmanụ "Exxon Valdez".
Ọ dị mma.