The classical example of adaptive radiation in development of new species is
Given below some major events in the early history of life
$I.$ First heterotrophic prokaryotes
$II.$ First eukaryotes
$III.$ First autotrophic prokaryotes
$IV.$ First animals
Choose the correct sequence of these evolutionary events
Which is the largest known fossil of reptile
The embryonic development of an animal from the zygote to the adult stage is known as
The correct meaning of natural selection is
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