Science: Insulation

insulation

Insulation
insulation

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