Name 7 examples of functional regional hubs in alaska

The question is asking to give some example of the regional hubs in alaska, and base on my research and further investigation, I would say that the answer would be  the Barrow, Wainwright, Point lay, Kivalina, Kotzebue, Kiana, and Amblier. I hope you are satisfied with my answer and feel free to ask for more 

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

producing or giving rise torelating to or engaged in the production of goods, crops, or other commodities.

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.