Science: Insulation

insulation

Insulation
insulation

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