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- Industrial pollution. Silhouetted refinery chimneys and smoke stacks billowing dark, grey and orange smoke against a vibrant sunset sky. Air pollution from fossil fuel burning. Climate change, global warming. Puzzle #777717234
Industrial pollution. Silhouetted refinery chimneys and smoke stacks billowing dark, grey and orange smoke against a vibrant sunset sky. Air pollution from fossil fuel burning. Climate change, global warming. Puzzle #777717234