Question

Human evolution began approximately 7crore year ago

Answer 1

True. According to the Darwinian theory of evolution, human beings evolved by a long procedure from apelike creatures. In the process, we have gained some characteristics like advanced brain, ability to walk on two limbs, ability to use language for communication, etc. while losing some useless others. According to research, human beings have abut fifteen to twenty species in history that it evolved from.

Answer 2

⇒Very young embryos of fish,amphibians,reptiles , birds and mammals show quite similar structure in the early stages

⇒As the further growth takes place , they acquire different patterns

⇒The initial  similarity between the vertebrate embryosis an evidence that during evolution , there was a common ancestor for all the verebrate classes

⇒This is called embroyological evidence for verebrate evolution