10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
In 1850, only 8% of the people in California were women.
1
The water of the Antarctica is so cold that nothing can rot there.
328
Forest fires move faster uphill than downhill.
52
There are more than 50,000 earthquakes throughout the world every year!
47
Every year, Alaska has about 5,000 earthquakes.
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The Caspian Sea is also classed as the world's largest lake.
52
The warmest temperature ever recorded on Antarctica was 3 degrees F.
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