Science: Insulation

insulation

Insulation
insulation

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