Science: Insulation

insulation

Insulation
insulation

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