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Nature
Flat
Miscellaneous
flag, landscape, nature
LightSeaGreen
512x512
Industry
nuclear, Cooling Tower, Nuclear Plant
Black
industry, nature, landscape
Chimney, buildings, nuclear
nuclear, landscape, buildings
Science
science, Molecule, nature
Molecular, Molecule, science
science, Molecular, Biology
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Molecular, Biology, science
Space
Half Moon, weather, Astronomy
SandyBrown
galaxy, Astronomy, education
DarkSlateGray
Astronomy, full moon, nature
summer, Summertime, sun
education, space, sun
Tourism and travel
summer, sun, landscape
landscape, nature, Snow
Outdoors
nature, hot, Flame
Pine, yard, Tree
nature, woods, Forest
Cleaning
tap, Spigot, Water Tap
City Elements
pines, trees, Forest
universe, space, education
LightPink
planets, nature, universe
Gold
nature, Astronomy, weather
Firebrick
