Science: Insulation

insulation

Insulation
insulation

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