Butterflies Hatch From This Hardened Casing
Puzzle 6 of Beat the Heat Pack
Question is: Butterflies Hatch From This Hardened Casing
and the answer is: CHRYSALIS
Word Meaning:
CHRYSALIS — A butterfly pupa or the pupal stage of the butterfly lifestyle; (originally) any pupal stage of any insect wherein the pupa is largely inactive and takes no food.
Definitions from Wiktionary.