snow accumulated on much of the land, glaciers and ice sheets extended over large areas and the sea levels were lower.
(snow; accumulated; L:on much of the land, glaciers and ice sheets) (the land, glaciers and ice sheets; extended; over large areas and the sea levels) (snow accumulated on much of the land, glaciers and ice sheets; were; lower)
snow the land, glaciers and ice sheets snow accumulated on much of the land, glaciers and ice sheets
accumulated extended were
L:on much of the land, glaciers and ice sheets
over large areas and the sea levels
lower