Science: Insulation

insulation

Insulation
insulation

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