Earth Science: Geologic Time Through the study of fossils and the layers of the earth, scientists have been able to discover much about how life evolved on the earth.
(scientists; have been; able to discover much about how life evolved on the earth) (scientists; to discover; much) (life; evolved; L:on the earth)
scientists scientists life
have been to discover evolved
able to discover much about how life evolved on the earth
much
L:on the earth