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Having a structure of cartilage. Learned this in 4th AND last week in 6th grade people!

Sharks have no bone, just cartilage.
Did you know sharks are cartilaginous fish?
by Nerdy6thGrader September 11, 2013
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Oct 3 Word of the Day
I couldn’t care less (but one must keep up appearances, right?)
Frenemy has a family tragedy. "Thoughts and prayers."
by November 05, 2018
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