Science: Insulation

insulation

Insulation
insulation

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