What are the names and chemical formulas for three of the most studied pollutants (primary or secondary)?

1.       CH4 (hydrocarbons)   --  primary pollutant

2.       NO2 (nitrogen dioxide)  -- primary pollutant

3.       O3 (Ozone)  -- secondary pollutant

A primary pollutant is an air pollutant emitted directly from a source while a secondary pollutant is not directly emitted but forms when other pollutants (primary pollutants) react in the atmosphere.

the most common energy conversion is from kinetic energy to potential energy, and then from potential energy to kinetic energy.

later on comes the heat energy, mechanical energy, and other energy conversions.

this energy conversion is so common that we can find it in our day to day lives as well.

- one of the most common energy conversions involves the changing of potential energy to kinetic energy or kinetic energy to potential energy