Assertion: box turtle's time | /r/CapableOf | determine the age of older turtles
Facets:
value: with accuracy
type: MANNER
Source sentences:
text: If the plastron rings are not visible, another way to determine a box turtle's age is to count the rings on the carapace (the top of the turtle's shell); however, these also wear away with time making it difficult to determine the age of older turtles with accuracy.