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Name Two Air Pollutants That Can Come from Both Natural

question 24

Essay

Name two air pollutants that can come from both natural and human-related sources. Why do air pollution regulations usually focus on the human causes of air pollution?


Definitions:

Treatment Group

A group of subjects in an experimental study that receives the treatment or intervention being tested, as opposed to a control group that does not.

Placebo Group

A control group in an experiment that receives a sham or inert treatment, allowing researchers to measure the effect of the actual treatment against no treatment.

Significance Level

A threshold set by the researcher before an experiment to decide whether to reject the null hypothesis, typically denoted by alpha (α).

Weekly Salaries

The amount of money a person earns per week from their employment.

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