Being burried under soil and mud changes peat into coal through extreme heat and pressure in a swamp over a long period of time.
Dead plants provide peat moss.
Being buried under soil and mud changes plants into coal.
What changes into coal when buried under soil and mud?
(1) rocks
(2) sun
(3) animals
(4) cellulose
(5) moon
(6) plants
(7) Newton
(8) tunicates