Science: Insulation

insulation

Insulation
insulation

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