What are two main products of the combustion of methane and other fossil fuels?

If a simple combustion reaction is given to methane, it would mean that it is possible to burn it. The combustion process consists of a reaction between methane and oxygen in the air. When such reaction takes place, the by products are: carbon dioxide and water - - - and also energy.

Answer is: main products of the combustion of methane and other fossil fuels are carbon (IV) oxide and water.

Balanced chemical reaction of combustion of methane:

CH₄ + 2O₂ → CO₂ + 2H₂ O.

In this combustion reaction, carbon is oxidized (from - 4 to + 4 oxidation number) and oxygen is reduced (from 0 to - 2 oxidation number).