The History of the Earth- Video
5 billion year ago gravity pull rocks to form earth. The earth was mostly hot and there was no oxygen back then. A small planet Alfia came to earth about 10 miler per second and restore oxygen. By mixing this two planets they created oxygen. 3900 billion year ago meteors came to earth and inside each meteors it had small crystals of water. 3800 billion years ago lava burst up and created volcanoes island. For years after more meteors comes to the earth and dissolves proteins in the water. on the bottom of the ocean the crust heats up and all the island gets together and creates continents. After the big snow ball melted bacteria organisms involved like plants and weird creatures in the water.
460 billion year ago the continent keeps changing and moving. One fish uses their neck and fins to move on earth. Trees and plants also involves outside the water and produce more oxygen . Back then animals were very big for example a scorpion back then they were the sizes of a wolf. The oxygen was so high animals grow bigger. 200 billion year ago pangea happen and all life reproduce again. Dinosaurs live during this time period. A big komet hits the earth and kills all the dinosaurs.
460 billion year ago the continent keeps changing and moving. One fish uses their neck and fins to move on earth. Trees and plants also involves outside the water and produce more oxygen . Back then animals were very big for example a scorpion back then they were the sizes of a wolf. The oxygen was so high animals grow bigger. 200 billion year ago pangea happen and all life reproduce again. Dinosaurs live during this time period. A big komet hits the earth and kills all the dinosaurs.