Assertion: whelk | /r/HasAspect | gland
Facets:
Source sentences:
text: The whelk has a gland that secretes a chemical that softens calcium carbonate so the radula can efficiently be used to bore a hole in the shell of the prey.
text: The whelk has a gland that secretes a chemical that softens calcium carbonate so the radula can efficiently be used to bore a hole in the shell of the prey.