What type of evolution is illustrated by many species developing from one common ancestral species?

My  Vestigial organs

Why?: " Vestigial organs are physical structures that were fully developed and functional in an ancestral group of organisms but are reduced and unused in the later species."

Hope I helped! :D

No because the eaeht is on a 23.5 degree axis tilt and so when it is winter the northern hemisphere is pointing away from the sun and the soutubern hemisphere is pointing toward the sun