From an environmental standpoint, which factor will most impact the endangered Beluga whale populations in Cook Inlet moving forward:
      1) underground fracking more than a mile below the floor of Cook Inlet, or 
      2) a lack of food, primarily salmon? 

More salmon are now making their way to the Mat-Su and Anchorage, because of the fish conservation corridor put in place a few years back by the Alaska Board of Fisheries on the commercial drift fleet in Cook Inlet. 

Beluga summer feeding grounds are northern Cook Inlet - they feed primarily on salmon. More food increases the chance of survival for baby Beluga. 

National Marine Fisheries Service ranks lack of food as the more pressing threat to Beluga in Cook Inlet.