Question

define evolution how does it occur describe how Fossil provide us evidence in support of evolution

Answer 1

evolution is the process in which complex organisms develop
if occurs due to genetic drift
fossils tells us how far an evolutionary relationship goes.

Answer 2

⋆ Evolution is the process of change from simple life forms to complex life forms by gradual change. It is generating diversity and shaping the diversity.

⋆ It occurs over the course of time and generations by variation, speciation, natural selection, genetic drift etc. Fossils are preserved traces of living organisms.

⋆ It helps us to find the intermediate forms in between two classes etc. For example fossils of archaeopteryx helps us to know better about the intermediate form between reptiles and aves.

⋆ It tells about the extinct species through the fossil or their retained body impressions.

⋆ It helps us to know the evolutionary relationships.

⋆ This also shows the line of development from primitive to complex organisms.