Science: Insulation

insulation

Insulation
insulation

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