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Jan 19. 2026
113
168It holds no heat of its own, yet rises and falls with yours, and speaks only in numbers when asked how warm the world has become. What am I?
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Reveal 113 168Show HintRevealJan 19. 2026
113 168It holds no heat of its own, yet rises and falls with yours, and speaks only in numbers when asked how warm the world has become. What am I?
Show HintReveal