Final answer:
The subarctic climate has the largest annual temperature range, while the arctic tundra climate has a smaller variation due to its coastal location.
Explanation:
The Subarctic climate experiences the largest annual temperature range of any climate on Earth, characterized by bitterly cold winters and mild summers.
In contrast, the Arctic tundra climate is generally bordered by an ocean, which moderates the annual temperature variation, resulting in a smaller temperature range.
The interior location of the subarctic climate leads to a larger temperature range even at a lower latitude due to being removed from moderating influence of an ocean.
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