The Great Wall of China stretches over 21,000 kilometers, winding through mountains, deserts, and valleys, making it the longest structure ever built by humans.
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baam
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star
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rocket
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banana
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15
Giraffes only need about 30 minutes to two hours of sleep per day, often taking short naps while standing up to stay alert for predators.
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boom
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shark
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gift
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thief
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15
The heart of a blue whale is so enormous that a human could crawl through its arteries, and it beats so loudly that it can be heard from several kilometers away.
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seesaw
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magnet
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shark
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lifesaver
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15
Some frogs can freeze solid in winter, stop their heartbeats completely, and then thaw out in the spring as if nothing happened.
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15
Lightning is five times hotter than the surface of the sun, reaching temperatures of up to 30,000 degrees Celsius in just a fraction of a second.
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lifesaver
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gift
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shark
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lifesaver
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15
The world's largest ocean, the Pacific Ocean, is so vast that it covers more area than all the landmasses on Earth combined.
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15
Sloths move so slowly that algae grow on their fur, providing them with natural camouflage from predators in the rainforest.
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15
A single cloud can weigh more than a million kilograms, yet it floats effortlessly across the sky due to the tiny water droplets being spread out.
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15
Octopuses have three hearts, and their blue blood helps them survive in the deep, cold waters of the ocean.
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15
Watermelons are made up of over 90% water, which is why they are not only refreshing but also incredibly hydrating on a hot summer day.
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15
Bananas are technically berries, while strawberries, despite their name, do not meet the scientific criteria to be considered true berries.
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15
The Eiffel Tower grows taller in summer due to the heat causing the metal to expand, making it up to 15 centimeters taller than in winter.