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Black particles of charcoal splash on white background, air pollution
Pollution: Garbages, plastic, and wastes on the beach of tropical sea. Environmental pollution. Sand beaches polluted with pieces of plastic waste.
Soil analysis and earth pollution metaphor or structure control. Nutrients microorganism composition research ground layer structure sample. Soil laboratory test. Scientist measuring levels status
factories and water environmental pollution. Waste and chemicals in the ocean
smoking chimney against the sky

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