Question

Describe the formation of coal using a flow chart ?

Answer 1

by the compressions of organic or decayed matter solid as well as liquid fuels are formed

Answer 2

ORGANIC MATTER ( PEAT )
....................↓
....................↓ Time+Pressure+Mild Heat
....................↓
..............LIGNITE
....................↓
....................↓ Time+High Pressure+High Heat
....................↓
................COAL

Hope it helps !!!