It's the Study of Bones
This page is the CodyCross answer for the clue below from City Life, Group 1648, Puzzle 1 (Skate Parks).
Question is: It's the Study of Bones
and the answer is: OSTEOLOGY
Word Meaning:
OSTEOLOGY — (anatomy) The scientific study of the morphology and pathology of bones.
Definitions from Wiktionary.