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Mauna Loa is the largest active volcano on Earth

Mauna Loa in Hawaii is the largest active volcano on the planet.

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Its name means long mountain in Hawaiian. It is a shield volcano with broad, rounded slopes, built by high-volume lava flows that travel long distances.

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Most of Earth's volcanoes are on the seafloor

The greatest number of Earth's volcanoes occur on the ocean floor.

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Antarctica is the world's largest desert

Antarctica qualifies as a desert because it receives very little precipitation, despite being covered by ice.

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Canada has the world's longest coastline

Canada has more coastline than any other country, with estimates exceeding 200,000 kilometers.

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