Science: Insulation

insulation

Insulation
insulation

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