Science: Insulation

insulation

Insulation
insulation

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