PRESENTATION OUTLINE
How long ago was the earth formed
what role did mass and gravity play in Earth forming?
When the sun cooled it formed meteors. With each strike Earth's gravitational force grew which drew more and more meteors to the planet. This eventually formed the Earth's layers.
The Earth's atmosphere.
The Earth got its atmosphere from many places as such as:
Volcanoes and plants. Volcanoes produced heat which evaporated the water into oxygen. Plants take in CO2 and give off oxygen too!
How did Earth get its ?Many asteroids hit the Earth which is a theory to how the earth got its water. There is also a space nebula that also could have donated water.