Inuits were predominantly what

For the inland Inuit, the caribou was the most important resource; it provided meat, a hide for clothing, and sinew for rope. The coastal Inuit hunted mostly seals and walruses and, depending on the region, narwhals and belugas; of course also the occasional caribou. The seals were used for food for men and dogs.

Explanation:

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the difference is that white collar worker performs skills like worker as a scientist or well blue collars do physical work and they do services like being a cook.

the answer for 3 is b and the answer for 4 is d