Science: Insulation

insulation

Insulation
insulation

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