Stock photography, photos: air pollution Stock photos of Chemical industry on the banks of the St Clair River at Port Huron Michigan spews smoke which can form acid rain Photograph: © Dennis MacDonald Click for a larger image and more information Keywords associated with this stock photo: Business, Commerce, Selling, Sales, Purchasing, purchase, Economics, Money, Cash, Trade, Industry, Company, Retail, Vendor, Financial, Finance, Promote, Promotion, Sell, Selling, Buy, Buying, Trading, Jobs, Workers, People, Adults, Careers, Challenges, Competition, Diversity, Economy, Industrial, Failure, Growth, Goals, Wholesale, Pollution, Noxious Waste, Smog, Greenhouse, Gases, Contamination, Contaminated, Fumes, Poison, Deadly, Toxic, Smoke, Haze, Clouds, Odor, Lethal, Stench, Acid Rain, Air, Water, ecology, harmful, deadly, lethal, poisonous, injurious