Which is common to the formation of all fossil fuels?(1 point) Responses Swampy forest plants are converted into carbon-rich fuels. Swampy forest plants are converted into carbon-rich fuels. Sedimentary rock is converted into carbon-rich fuels. Sedimentary rock is converted into carbon-rich fuels. Fossils are converted into carbon-rich fuels. Fossils are converted into carbon-rich fuels. Once-living organisms are converted into carbon-rich fuels.

Answer 1

Once-living organisms are converted into carbon-rich fuels.