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A recycling water drawing

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A recycle water drawing

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A plumbing drawing

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A saving water drawing

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A water pollution drawing

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Recycling drawing

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A recycling bag drawing

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A lake drawing

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A solar panel drawing

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A voice drawing

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Global warming drawing

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A hydro power drawing

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A skylight drawing

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A car check point drawing

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A solar panel drawing

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A bus drawing

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A deer drawing

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A collecting rainwater drawing

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A technician drawing

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A saving planet drawing

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A carbon dioxide drawing

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An energy saving drawing

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A library drawing

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A swimming pool drawing

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Disabled parking drawing

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A data chart drawing

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An information desk drawing

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A parking spot drawing

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A tree drawing

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A wind tribune drawing

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A leaf drawing

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A bicycle drawing

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Solar energy drawing

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A gas station drawing

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A car gas filter drawing

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Canoeing drawing

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Meditation drawing

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A bus station drawing

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A library drawing

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An university drawing