Science: Insulation

insulation

Insulation
insulation

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