Explain what automatic garbage collection in a memory management system is.

Automatic garbage collection is a memory management mechanism where the system detects and frees unused objects to prevent memory leaks. In Flutter (and Dart), the garbage collector tracks objects that are no longer referenced and automatically cleans them up, freeing resources.

This allows developers not to worry about manual memory management, reducing the likelihood of errors related to improper memory release, such as leaks or double deletions.