Science: Insulation

insulation

Insulation
insulation

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