Today, I learned the history of the earth's birth to the era before nowadays. The Earth's birth is actually kind of mystery. Because no one know the exact historical fact how Earth came up. But the most sensible theory is Bigbang. That theary says at first the Earth was made of gases and dust.Then Binbang happened and had a lot of rain which made oceans and trees. Start from there the creatures were appeared at Earth.

  The bacterias, which was first creatures appeared and even made oxygen. Then the dinosaurs appeared and to the mammal. After that, finally human become the part of nature. Maybe some of animals exist nowadays, could be transformed from long time ago creatures.

  I think the current of creatures are important enough as the history of korea.Thank you for reading my words.