GEOLOGY

Detailed explanation-1: -They can teach us where life and humans came from, show us how the Earth and our environment have changed through geological time, and how continents, now widely separated, were once connected. Fossils provide important evidence for evolution and the adaptation of plants and animals to their environments.

Detailed explanation-2: -Paleontology is the study of the history of life on Earth as based on fossils. Fossils are the remains of plants, animals, fungi, bacteria, and single-celled living things that have been replaced by rock material or impressions of organisms preserved in rock.

Detailed explanation-3: -Fossil records show evidence of how living organisms have evolved or changed over time. Paleontologists were able to detect the particular order in which these organisms have lived. For instance, simpler organisms inhabited older rocks and complex organisms were found in younger rocks.

Detailed explanation-4: -The fossil record is incomplete. Of the small proportion of organisms preserved as fossils, only a tiny fraction have been recovered and studied by paleontologists. In some cases the succession of forms over time has been reconstructed in detail.