What technique were used to identify the remain bones

THE TSAR'S BONES: DNA techniques used to identify human remains. THE PROBLEM of accurately identifying long-dead corpses, which time has often reduced to a pile of bones, has been revolutionised with the techniques of DNA analysis.

DNA techniques used to identify human remains. THE PROBLEM of accurately identifying long-dead corpses, which time has often reduced to a pile of bones, has been revolutionised with the techniques of DNA analysis.

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the answer is c. altitude. hope this ! #brainiac