Welwitschia mirabilis, found in Namibia's desert, grows only two leaves over its entire lifespan of over 1,000 years.
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Sharks are older than trees — they appeared about 450 million years ago.
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Certain plants close their leaves when touched as a defense response.
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Lightning can strike more than once in the same place.
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Rainbows form when light refracts and reflects in water droplets.
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