Science: Insulation

insulation

Insulation
insulation

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