A nonrenewable resource is one that is not easily replaced in comparison to its level of consumption. Examples of nonrenewable resources are most fossil fuels such as oil, petroleum, or natural gas. These fuels are called fossil fuels because they take millions of years to undergo the decomposition process required in order to be produced.
In comparison, renewable resources take a shorter period of time to be produced with respect to their level of consumption. Examples of renewable resources are wind energy, solar energy, timber, and biomass. Renewable resources can also refer to commodities such as wood, leather or paper. Renewable resources have the extra benefit of being alternative fuels that emit less pollution. Thus, there is a push in our society to start using more of such resources for energy.