Those are all either criteria pollutants as identified by the EPA (Environmental Protection Agency) or are climate pollutants like CO2.
这些都是美国环保局(EPA)认定的标准污染物，或者是像二氧化碳这样的气候污染物。
英语百科
Criteria air contaminants
（重定向自Criteria pollutant）
Criteria air contaminants (CAC), or criteria pollutants, are a set of air pollutants that cause smog, acid rain, and other health hazards. CACs are typically emitted from many sources in industry, mining, transportation, electricity generation and agriculture. In most cases they are the products of the combustion of fossil fuels or industrial processes.