Most of the low-lying country became covered with grasses and herbs with intervening scattered copses of birch, juniper and dwarf willow.
(Most of the low-lying country; became; covered with grasses and herbs with intervening scattered copses of birch, juniper and dwarf willow) (Most of the low-lying country; covered; with grasses and herbs with intervening scattered copses of birch, juniper and dwarf willow)
Most of the low-lying country Most of the low-lying country
became covered
covered with grasses and herbs with intervening scattered copses of birch, juniper and dwarf willow
with grasses and herbs with intervening scattered copses of birch, juniper and dwarf willow