Mammoth Tusks - How Old Are They?

Mammoth tusks contain growth rings, just like trees do. By counting them, scientists can determine how old the mammoth was when it died. From the tusk, researchers were able to map out a nearly 50 thousand mile journey throughout alaska. The mammoth spent its early years in the yukon river basin in alaska's interior. At two years old, it moved north and began roaming a large territory southeast of the brooks range mountains,. And that was probably with a herd. But at 16 it began roaming a larger range, probably alone as a bull. And it spent its final years the far north of alaska, on the northern slope of the bro Brooks range

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