Science: Insulation

insulation

Insulation
insulation

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