What type of fossil fuel is made from trees ferns moss is and other marsh plants a. coal b. petroleum c. natural gas d. crude oil

I believe the answer is A. Coal.
It's mainly composed of carbon, so when the heat and pressure were applied it forced oxygen out and left the carbon deposits behind.

B] nitrogen fixationmight be wrong, so correct me.want extra on your answers? just go on my account and go on questions and answer, or ask in the comments!