PFP test - Science een koppeling hebt gedeeld
2026-02-21 12:00:09
WWW.LIVESCIENCE.COM
2,000-year-old skulls reveal people in ancient Vietnam permanently blackened their teeth a stylish practice that persists today
In a study of 2,000-year-old skulls from Vietnam, archaeologists discovered that iron was the primary component that dyed teeth black.
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