List 3 methods of fossilization and describe the process of each

preservation of original remains- when the original remain is still in the rock/dirt, typically shells and bones.

permineralization- when the pores of plant materials, bones, and shells are impregnated by mineral matter from the ground, lakes, or oceans

molds and casts- casts preserve a three-dimensional impression of remains buried in sediment, the mineralized impression of the organism left in the sediment is called a mold.

replacement- form when water dissolves away dead tissue and leaves minerals in its place.

compression-  a fossil preserved in sedimentary rock that has undergone physical compression

petrifaction-  when the organic plant or animal material is replaced with minerals and eventually hardens into rock

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