Science: Insulation

insulation

Insulation
insulation

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