Invertebrates Don't Have This Hard Structure
This page is the CodyCross answer for the clue below from Sense of Smell, Group 1479, Puzzle 2 (Paint Thinner).
Question is: Invertebrates Don't Have This Hard Structure
and the answer is: SKELETON
Word Meaning:
SKELETON — (anatomy) The system that provides support to an organism, internal and made up of bones and cartilage in vertebrates, external in some other animals.
Definitions from Wiktionary.