marine plankton and algae in the Mesozoic & Cenozoic eras mostly. Hardly considered renewable unless you plan to cover the earth in large warm shallow seas with the right tectonic conditions to deposit dead marine life instead of allowing it to rapidly decompose
marine plankton and algae in the Mesozoic & Cenozoic eras mostly. Hardly considered renewable unless you plan to cover the earth in large warm shallow seas with the right tectonic conditions to deposit dead marine life instead of allowing it to rapidly decompose