Science: Insulation

insulation

Insulation
insulation

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