Science: Insulation

insulation

Insulation
insulation

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