Science: Insulation

insulation

Insulation
insulation

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