Science: Insulation

insulation

Insulation
insulation

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