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Tools And Utensils
Flat
Ecology Elements
recycle bin, Trash, Garbage
Black
512x512
Arrows
nature, Ecologism, Arrows
technology
Ecological, Renewable Energy, power
Nature
environment, Park, woods
Buildings
Hydroelectric Power Station, buildings, Ecological
technology, Eolical, Wind Mill
waste, tube, Contamination
drop, Bathtub, plumber