Answer
Methane, being the simplest hydrocarbon, is a usual product of digestion or breakdown of other more complex hydrocarbons like plant matter.
It is formed as a product of anaerobic bacterial decomposition of vegetable matter under water, termites (produced by the insects as a product of breaking down wood components called cellulose), and natural gas.
Work Step by Step
Methane, being the simplest hydrocarbon, is a usual product of digestion or breakdown of other more complex hydrocarbons like plant matter.
It is formed as a product of anaerobic bacterial decomposition of vegetable matter under water, termites (produced by the insects as a product of breaking down wood components called cellulose), and natural gas.