Which is the world's largest freshwater lake by volume?
- Lake Superior
- Lake Baikal
- Lake Victoria
- Lake Tanganyika
Answer: Lake Baikal
Lake Baikal in Siberia, Russia, is the world's largest freshwater lake by volume (23,600 cu km), holding about 20% of Earth's unfrozen surface freshwater. It is also the deepest (1,642 m) and oldest (25 million years) lake.