Science: Insulation

insulation

Insulation
insulation

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