[["Depending on the species, sharks often have anywhere from 5 to 15 rows of teeth per jaw", 330.0], ["Sharks have teeth which grow in rows and which have no roots. Most sharks have between 5 and 15 rows of teeth in each jaw.  The bull shark is a notable exception with an incredible 50 rows of teeth!  ", 117.0]]
how many rows of teeth do sharks have
animals