Science: Insulation

insulation

Insulation
insulation

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