If all the coal,oilmethane now locked in the crust of our planet is the result of plants at work it seems those hydrocarbons had to be made from CO2 and water? If so, the carbon had to come from atmospheric carbon dioxide and the atmosphere was rich in CO2 before plants?
definitely it got here from the sunlight which replaced into utilized by way of plant life to eliminate CO2 from the air. through the years the decaying plant life (by way of a complicated chemical technique) replaced into coal and oil.
Most of the carbon isotopes came from plants. Some came from animals as well. You can actually see the plants in peat if you are willing to go into a peat bog. Peat becomes coal, oil, and natural gas with increasing pressure and long amounts of time. Before stromatolites evolved, there was little O2 in Earth's atmosphere. Stromatolites are cyano-bacteria and algae in a symbiotic relationship. Stromatolites still live and exist off the southwest coast of Australia. stromatolites and ginkgo biloba trees or living fossil species. Source links provided if and when requested.
It depends what you believe in. I believe in the big band, so stars gave us elements!
