Answer: Several study has been made to understand the history of the earth. It helps us in understanding the following things-
- to understand the dynamical and complex processes that undergoes in the earth.
- to understand how the universe and the solar system started from a single point, called the singularity.
- to understand the evolutionary trend of the earth including the plant and animal species.
- to understand the various factors that controls the climatic condition on earth.
- to predict what kind of scenerio will take place after millions of years from now.
And so on.