A chemist most likely study which type of fuel contributes the most to smog.
A chemist is a scientist who majors in or studies chemistry.
A chemist studies the composition of matter, the changes that matter undergo as well as the properties and uses of matter.
Matter can undergo physical or chemical changes.
The consumption of fuels and how they affect the environment will be of interest to a chemist.
Therefore, a chemist most likely study which type of fuel contributes the most to smog.
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