Science: Insulation

insulation

Insulation
insulation

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