Science: Insulation

insulation

Insulation
insulation

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COLD
ENERGY
FIRE
HEAT
HOT
INSULATOR
STOVE
SUN
TRANSFER
R C F X D F K H D
W O I T I V V I L
E L T R F E E Y H
N D E A A K V A K
E P F N L O O F N
R O R S V U T U B
G D T F N E S C X
Y T A E H O T N A
R W V R Y S L G I
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