Evolution

In this post we learn about Evolutions. Lets first define evolution and then,understand Darwin theory of evolution;The theory of evolution is an explanation for the origin of the cosmos and life on Earth through natural processes.


Darwin's Theory of Evolution is the widely held notion that all life is related and has descended from a common ancestor: the birds and the bananas, the fishes and the flowers -- all related. Darwin's general theory presumes the development of life from non-life and stresses a purely naturalistic (undirected) "descent with modification".Darwin's theory also explains the study of chromosome structure which is a very important aspect under evolution.



According to the theory of evolution, earth was formed 4.6 billion years ago. Its atmosphere probably contained little free oxygen, but a lot of water vapor and other gases, such as carbon dioxide and nitrogen, and was extremely hot. By 3.9 billion years ago, earth cooled enough for water vapor to condense, allowing millions of years of rain that formed earth's oceans.