crystallization from melted rock formation of sediment from weathering deposition and burial of dead plant matter eruption of volcanic ash followed by settling in a layer
Coal is usually found underground, compressed in a layer between other types of rock. Coal is produced by what rock-forming process?

Options:
- crystallization from melted rock
- formation of sediment from weathering
- deposition and burial of dead plant matter
- eruption of volcanic ash followed by settling in a layer

deposition and burial of dead plant matter