Science: Insulation

insulation

Insulation
insulation

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