Science: Insulation

insulation

Insulation
insulation

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