Fossils, Rocks, and Time http://pubs.usgs.gov/gip/fossils/ Fossils are the recognizable remains of past life on Earth and are fundamental to the geologic time scale.
(Fossils; are; the recognizable remains of past life on Earth) (Fossils; are; fundamental to the geologic time scale)
Fossils Fossils
are are
the recognizable remains of past life on Earth
fundamental to the geologic time scale