Science: Insulation

insulation

Insulation
insulation

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