Science: Insulation

insulation

Insulation
insulation

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