Science: Insulation

insulation

Insulation
insulation

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