FOSSIL FUELS
oil
coal image https://steelguru.com/uploads/news/chinese-buyers-turn-to-colombian-coal-as-australian-restrictions-persist-report_82567.jpg
natural gas image https://images.angelpub.com/2017/27/45005/nat-gas-pic-132.jpg
crude oil https://safety4sea.com/wp-content/uploads/2018/04/oil-pouring-out-of-yellow-barrel_104140919-1280x640.jpg
