Science: Insulation

insulation

Insulation
insulation

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