Science: Insulation

insulation

Insulation
insulation

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