Science: Insulation

insulation

Insulation
insulation

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