Jelly in Bones, Nutrient Source for Ancient People
This page is the CodyCross answer for the clue below from Health and Fitness, Group 2121, Puzzle 5 (Fitness Tracker).
Question is: Jelly in Bones, Nutrient Source for Ancient People
and the answer is: MARROW
Word Meaning:
MARROW — (uncountable) The substance inside bones which produces blood cells.
Definitions from Wiktionary.