Science: Insulation

insulation

Insulation
insulation

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