Question

define fossil.Explain importance of fossil as proof of evolutin

Answer 1

Hey there!!!


=>> fossils are the remains of organisms that once lives on earth, they represt the ancester of plants and animals.

(i) They inform us about the types of living things that existed in the past.

(ii) They inform us about the extent to which living things have changed over time.

(iii) They inform us about the time when a particular life form existed.


Hope it helped!!!!☺️

Answer 2

Hi your ans is the
A fossil(from ClassicalLatinfossilis; literally, "obtained by digging")[1]is any preserved remains, impression, or trace of any once-living thing from a pastgeological age. Examples include bones, shells,exoskeletons, stone imprints of animals ormicrobes, hair,petrified wood, oil, coal, andDNAremnants. The totality of fossils is known as thefossil record.Paleontologyis the study of fossils: their age, method of formation, andevolutionarysignificance. Specimens are usually considered to be fossils if they are over 10,000 years old.[2]The oldest fossils are from around 3.48 billion years old[3][4][5]to 4.1 billion years old.[6][7]The observation in the 19th century that certain fossils were associated with certain rockstrataled to the recognition ofageological timescaleand therelative agesof different fossils. The development ofradiometric datingtechniques in the early 20th century allowed scientists to quantitatively measure theabsolute agesof rocks and the fossils they host.There are many processes that lead to fossilization, includingpermineralization, casts and molds, authigenic mineralization, replacement and recrystallization, adpression,carbonization, and bioimmuration.Fossil of anSeymouria(extinct)Fossils vary in size from onemicrometerbacteria[8]todinosaursand trees, many meters long and weighing many tons. A fossil normally preserves only a portion of the deceased organism, usually that portion that was partiallymineralizedduring life, such as thebonesand teeth ofvertebrates, or thechitinousorcalcareousexoskeletonsofinvertebrates. Fossils mayalso consist of the marks left behind by the organism while it was alive, such asanimal tracksorfeces(coprolites). These types of fossil are calledtrace fossilsorichnofossils, as opposed tobody fossils. Some fossils arebiochemicaland are calledchemofossilsorbiosignatures.
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