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A lake can form when a river is blocked by mud and lava from volcanic eruptions or landslides. This blockage creates a natural dam, preventing the river from flowing freely and causing water to accumulate behind it. Over time, this accumulation can lead to the formation of a new lake as the water collects in the enclosed area. Additionally, sediment can build up, further shaping the lake's characteristics.

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2w ago

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What is melted rock that has been exposed to earths surface?

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