Which would be the most reliable source if you wanted to learn about pollution caused by coal–fired power plants?
information published by the owners of coal–fired power plants
a scientific analysis published by university researchers
newspaper articles containing interviews with power plant workers
a poll taken of residents of a town near a coal–fired power plant
information published by the owners of coal–fired power plants
a scientific analysis published by university researchers
newspaper articles containing interviews with power plant workers
a poll taken of residents of a town near a coal–fired power plant