Science: Insulation

insulation

Insulation
insulation

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