Science: Insulation

insulation

Insulation
insulation

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