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AGENCY AIR POLLUTION CONTROL air pollution inspector air we breathe areas becoming scarce careers chemical cities and towns city planners clean conservation conservationists crops deer dirt dump Ecologists ecosystem electric power Energy analysts ENERGY RESEARCH ENGINEER energy supplies environment equipment farmers by telling fish Foresters fully grown trees garbage Geologists grow young trees help farmers help to reclaim HISTORIC SITES PRESERVATION important industry industry's keep the air kind of sewage lakes and rivers Land use planners limnologists living things Meteorologists Minneapolis Minnesota Natural Resources picture plant pollute the air POLLUTION CONTROL CHEMIST Publications Company quality control technicians rainfall recommend samples of air SANITARY LANDFILL WORKER Sanitation engineers save the earth scientists who study sewage treatment SITES PRESERVATION SPECIALIST Solar soot source of energy spill study soil sure take samples thrive trenches waste WATER QUALITY CONTROL water we drink waterways weather forecasters wild animals WILDLIFE MANAGEMENT BIOLOGIST wisely