Science: Insulation

insulation

Insulation
insulation

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