People have used ..... fuels such as oil, coal and natural gas for a long time. These limited resources were created when ancient life forms decomposed. However, we have to find other forms of energy in order to save the planet.

People have used ..... fuels such as oil, coal and natural gas for a long time. These limited resources were created when ancient life forms decomposed. However, we have to find other forms of energy in order to save the planet. (*) fillet (*) prepare (*) fossil


This is a companion discussion topic for the original entry at https://english.best/questions/17563,people-have-used-___-fuels-such-as-oil-coal-and-natural-gas-for-a-long-time-these-limited-resources-were-created-when-ancient-life-forms-decomposed-however-we-have-to-find-other-forms-of-energy-in-order-to-save-the-planet/