Air pollution index in a roadsign electronic screen- many uses in environment and pollution control.

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Size: 5184px × 3456px
Photo credit: © Ragma Images / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: air, belching, carbon, clean, contaminants, contamination, control, dioxide, dirty, dust, emission, environment, fresh, healthy, index, measure, measurement, milligram, monoxide, oxygen, particles, pollutant, pollute, pollution, regulate, regulation, road, sign, smoke, sulfur, warning