im prtty sure its A but i dont know but hopefully its right
HOPE DIS HELPS :)
i want points so its c.
BC.....................
I think the answer is B. geologic.
Answer:
cold snow winters and hot Summers
Explanation:
most of them have cold winters and warm to hot Summers
migration
when the glaciers melt there is probably a surplus of water and so the people wouldnt want their homes to be flooded
