Science: Insulation

insulation

Insulation
insulation

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