The text covers the origin of planet Earth, plate tectonics, major rock types, weathering and landforms, change through time, and rocks and man.
(major rock types; weathering; ) (plate tectonics, major rock types; change; T:through time) Context(plate tectonics , major rock types change,List([44, 111))):(The text; covers; the origin of planet Earth)
plate tectonics , major rock types change,List([44, 111))
major rock types plate tectonics, major rock types The text
weathering change covers
T:through time
the origin of planet Earth