Science: Insulation

insulation

Insulation
insulation

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