Science: Insulation

insulation

Insulation
insulation

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