Carbon monoxide comes mostly from
Which would NOT help in the reduction of air pollution?
Which are true about global warming?
EPA stands for Environmental Protection Agency
A thick brownish haze formed when gasses react with sunlight is called
Ozone is made of what?
Acid rain is made from
What layer of the atmosphere has 'Bad' Ozone?
The largest source of photochemical smog on Earth
The probable cause of the hole in the ozone is
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