Coal formation began millions of years ago when giant plants died and formed a decayed vegetable matter called peat.
(Coal formation; began; millions of years; T:ago; T:when giant plants died and formed a decayed vegetable matter) (giant plants; died; ) (giant plants; formed; a decayed vegetable matter called peat) (a decayed vegetable matter; called; peat)
Coal formation giant plants giant plants a decayed vegetable matter
began died formed called
millions of years T:ago T:when giant plants died and formed a decayed vegetable matter
a decayed vegetable matter called peat
peat