Some beaches contain the following ecosystems: Dunes are formed behind a beach by wind-blown sands.
(Some beaches; contain; the following ecosystems: Dunes are formed behind a beach by wind-blown sands) (Dunes; are formed; L:behind a beach by wind-blown sands)
Some beaches Dunes
contain are formed
the following ecosystems: Dunes are formed behind a beach by wind-blown sands
L:behind a beach by wind-blown sands