GENERAL GEOLOGY

Detailed explanation-1: -Fossils are the preserved remains of plants and animals whose bodies were buried in sediments, such as sand and mud, under ancient seas, lakes and rivers. Fossils also include any preserved trace of life that is typically more than 10 000 years old.

Detailed explanation-2: -fossils the trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock. paleontology the scientific study of fossils.

Detailed explanation-3: -Fossils are the geologically altered remains of a once-living organism and/or its behaviour. There are two main types: body fossils represent all or part of the organism’s body, and trace fossils show evidence of the organism’s behaviour.

Detailed explanation-4: -Hard parts, such as shells, teeth, and bones, are more resistant to decay than soft parts are. So, the hard parts of organisms are more often preserved than soft parts are. The fossils are preserved when sediment hardens to form sedimentary rock.

Detailed explanation-5: -Almost all fossils are preserved in sedimentary rock. Organisms that live in topographically low places (such as lakes or ocean basins) have the best chance of being preserved. This is because they are already in locations where sediment is likely to bury them and shelter them from scavengers and decay.