Science: Insulation

insulation

Insulation
insulation

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