Science: Insulation

insulation

Insulation
insulation

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