GEOLOGY

Detailed explanation-1: -The hard parts of organisms, such as bones, shells, and teeth have a better chance of becoming fossils than do softer parts. One reason for this is that scavengers generally do not eat these parts. Hard parts also decay more slowly than soft parts, giving more time for them to be buried.

Detailed explanation-2: -Fossils are the remains or traces of ancient life that have been preserved by natural processes. Examples of fossil include shells, bones, stone imprints of animals or microbes, exoskeletons, objects preserved in amber, petrified wood, coal, hair, oil, and DNA remnants.

Detailed explanation-3: -A fossil is any evidence of prehistoric life (plant or animal) that is at least 10, 000 years old. The most common fossils are bones and teeth, but fossils of footprints and skin impressions exist as well.

Detailed explanation-4: -Organisms with soft parts are rarely preserved because the soft tissue rapidly decomposes. Hard parts such as bones and shells are more readily fossilized.

Detailed explanation-5: -Types of Preservation. Unaltered hard parts-The body fossil is made up of exactly the same material as when it entered the rock record. Teeth are a good example as they are the hardest part in a vertebrate body, and they typically have the same composition in fossils as they do when they are in your mouth.