Science: Insulation

insulation

Insulation
insulation

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