What is evolutionary biology?

(N/A) Evolutionary Biology is the study of the history of life forms on Earth.
To understand the changes in flora and fauna that have occurred over millions of years on Earth,we must have an understanding of the context of the origin of life,i.e.,the evolution of Earth,of stars,and indeed of the universe itself.
It encompasses the study of the origin of life and the evolution of life forms or biodiversity on planet Earth,viewed against the background of the evolution of the universe.