Science: Insulation

insulation

Insulation
insulation

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