Science: Insulation

insulation

Insulation
insulation

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