When seasonal shifts in weather occur over long periods, they can profoundly alter the vegetation and other aspects of the landscape.
(seasonal shifts in weather; occur; T:over long periods) (they; can profoundly alter; the vegetation and other aspects of the landscape; T:When seasonal shifts in weather occur over long periods)
seasonal shifts in weather they
occur can profoundly alter
T:over long periods
the vegetation and other aspects of the landscape T:When seasonal shifts in weather occur over long periods