Check all that apply. View Available Hint(s)for Part J The majority of crude petroleum and natural gas reserves are located in less developed countries. Russia is the only country to rank in the top tier in the production of both crude petroleum and natural gas. Natural gas and crude petroleum reserves are measured using the same units. North America ranks at the bottom of crude petroleum reserves. Saudi Arabia is one of the top crude petroleum producers. It also has the largest crude petroleum reserve. Russia is one of the top natural gas producers. It also has the largest natural gas reserve