Science: Insulation

insulation

Insulation
insulation

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