OBJECTIVE FORESTRY

Detailed explanation-1: -Fossils are typically found in sedimentary rocks and occasionally some fine-grained, low-grade metamorphic rocks. Sometimes the fossils have been removed, leaving moulds in the surrounding rock, or the moulds may have later been filled by other materials, forming casts of the original fossils.

Detailed explanation-2: -For a fossil to form, sediment must cover the organism quickly. The sediment protects the remains from scavenging animals, erosion and decay. Most often, fossils include hard tissue like bones, teeth, shells and wood, since soft tissue rarely preserves. But footprints and other marks left behind can fossilize, too.

Detailed explanation-3: -Fossils are formed in many different ways, but most are formed when a living organism (such as a plant or animal) dies and is quickly buried by sediment (such as mud, sand or volcanic ash).