1A, What is PPM used to measure in air pollution?, 1B, What does 5 PPM of carbon monoxide mean?, 1D, 1C, What does mg/m³ measure?, 2B, 2A, What kind of pollutants are usually measured in mg/m³?, 2C, What is the difference between PPM and mg/m³?, 2D, What does mg/Nm³ measure?, 3C, 3B, What are the “normal conditions” for mg/Nm³?, 3D, 3A, Why is mg/Nm³ important for comparing data?, 4A, 4B, Which unit is used for gases: PPM or mg/m³?, 4D, 4C, Why is it important to understand these units?, 5D, 5B, What is PPM?, 5C, 5A, What does mg/m³ mean?, 6A, 6B, What does mg/Nm³ mean?, 6C, Which unit is used for dust or particles?, 6D, Which unit helps compare data in different places?
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