Question

Only a small proportion of the organisms that live in the geologic past have been preserved as fossils which condition Best increases the chance that an organism Will be fossilized

Answer 1

fossils are the remains or evidence of life from previous geological time.

fossils are generally very old, but technically the remains of organisms that are more than 10,000 years old can be called fossils.

Further explanation

below I briefly explain how fossils can form.

• Mineralization. when ground water enters the body of a dead organism, it will usually deposit water into the body of the organism. the results of these deposits will have the same composition as the body of the organism.

• petrification, which is an organ that is soft in organisms that will become a mineral. examples of metrified fossils are petrified wood fossils.

• recrystallization, which is a type of mineral will crystallize to various other minerals. example on a shell composed of aragonite minerals after going through phosphilliation will form calcite minerals.

• casts and molds, which are three-dimensional shapes of the phosphillation process.

• carbonization, an organism's body buried quickly and because all the volatile material will be heated up by geothermal heat, leaving a carbon film. an example of perfect carbonization is leaf fossils.

• Amber fossil Amber is a tree sap fossil. Some types of trees, when the bark or stem is peeled off, the tree will secrete sap.

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fossils : brainly.com/question/11556123

Details

Class: high school

Subject: history

Keywords : fossils, geological, organism.

Answer 2

It varies depending on the environment where it fossils and the type of organism:  

1-Conservation of organs without modification or with discrete modifications (recrystallization). Is the usual case of hard parts (shells, bones, teeth, calcareous algae ...), and exceptionally soft parts in very particular conditions: ahem. mammoths conserved in icy soils of siberia or in hydrocarbons (ozokerites) north of the Carpathians, insects included in fossil resins (baltic amber).

2-Conservation of organs after their replacement by a different subject preserbando its structure with more or less detail. (It is a process called metasomatism) ahem. silicification of trunks of trees, vertebrate bones or the pyritization of ammonites.

3-Conservation in the form of mold of the organism, internal or external to it. It is often the case of ammonites, shells or conches.

The fossilization process is said to start at 100ºC and pressures above 1Kb (kilobar). Conyeva an exchange of atoms, between the original organism and the matter that surrounds it. They are called fossiligenetic processes. Some of the processes are: carbonation, silicification, phosphatization, pyritization, dissolution.