GEOLOGY

Detailed explanation-1: -The first type, body fossils, are the fossilized remains of an animal or plant, like bones, shells, and leaves.

Detailed explanation-2: -trace fossils = ichnofossils (fossilized nests, gastroliths, burrows, footprints, etc.) true form fossils (fossils of the actual animal or animal part).

Detailed explanation-3: -True Form Fossils. True Form fossils are formed when the animals soft tissues or hard parts did not decay over the years because they are trapped in sap that hardens to become amber. This evidence gives scientists the BEST observation of past plants and animals.

Detailed explanation-4: -Sediment: Naturally occurring material that is broken down by processes of weathering and erosion. True form fossils also form when sap from a tree covers an organism and hardens into amber. Many preserved insects have been found this way. We can also see true form fossils where there is extreme weather.

Detailed explanation-5: -Most animals become fossilized by being buried in sediment. For them to be fossilized, they have to be buried and leave an imprint before they decompose. Animals without skeletons are seldom fossilized, because they decompose so quickly. Animals with hard skeletons are much easier to fossilize.