Science: Insulation

insulation

Insulation
insulation

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