the creation of such a distinct and noticeable structure.
4. Why Oak Apple Galls Are Hollow and Light as a Feather
The hollow nature of oak apple galls is primarily due to the lifecycle of the wasps that inhabit them. As the gall develops, it forms a protective outer shell while leaving the interior largely empty beyond the space needed for the wasp larvae. This structure is efficient, providing security without the need for a solid mass inside.
Once the larvae mature and leave the gall, what remains is a
