Science: Insulation

insulation

Insulation
insulation

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