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Which is the deepest lake in the world?
- Lake Superior
- Caspian Sea
- Lake Baikal
- Lake Tanganyika
Answer: Lake Baikal
Lake Baikal in Siberia, Russia, is the deepest lake in the world (1,642 m) and holds about 20% of the world's unfrozen freshwater. It is the oldest lake (25 million years) and a UNESCO World Heritage Site, home to unique species like the Baikal seal.