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Earth is not a perfect sphere

Earth bulges at the equator because of the centrifugal force created by its constant rotation.

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Its true shape is an irregular ellipsoid. Mountains almost 30,000 feet high and ocean trenches more than 36,000 feet deep distort it further.

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Hurricanes and typhoons are the same kind of storm

The only difference between a hurricane and a typhoon is the place where the storm occurs.

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Most ocean species have not been classified

Scientists estimate that 91 percent of the species in the ocean have yet to be classified.

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Any two people share about 99.6% of their DNA

On average, any two people's genomes are about 99.6 percent identical.

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