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What material is the narwhal's horn?

0 votes
32 views
ABone
BIvory
CHair
DHardened skin

Correct Option: 2  

Explanation:
Ivory
The horn is an elongated and tapering canine tooth, spirally grooved, 2 to 3 metres (7 to 10 feet) long.
posted Mar 6, 2018 by Upma

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