Science: Insulation

insulation

Insulation
insulation

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