Science: Insulation

insulation

Insulation
insulation

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