Today, I went to Seodaemun Museum Of Natural History, and I learned about many different kinds of things. There were dinosaur fossils and planets. Three countries that have many dinosaur fossils are Korea, USA, and Argentina. The Earth's birth has an interesting story. When a big cloud and gases erupted, the earth was formed. Inside of the earth, there is a core, a mantel and a crust. We live on the crust. We can't live on the core or the mantel because it is too hot. The Cyanobacteria lived during the Precambrian Era. Cyanobacteria produce oxygen. In our solar system, there are 8 planets. Our planet Earth has a natural satellite, the Moon. In the Precambrian Era, the continents were one land. However, as time went on, it split into 5 continents, Asia, Africa, America, Europe, and Oceania. In conclusion, I want to go to outer space and see many planets and stars!

* Hi,

Great job! It seems like you learned a lot.