00:01
This question seems like a loaded question.
00:03
It asks you to define air pollution in terms of the kinds of pollutants, their sources, and the ways they are harmful.
00:11
Well, there are many, many different pollutants.
00:17
So i'm not quite sure the ones that they are referring to, but we'll start with some primary pollutants.
00:28
These would be things like particulates, aerosols, sulfur dioxide, nitrogen oxides.
00:47
This comes from burning of coal.
00:49
This comes from burning of almost anything.
00:53
Gasoline.
00:54
Hydrocarbons coming from gasoline.
00:57
And then there are also secondary pollutants such as ozone...