Science: Insulation

insulation

Insulation
insulation

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