Timeline

4.6 billion years
ago the earth formed by the solar nebula

Much of the Earth was molten because of collisions and volcanism

Overtime the planet cooled & liquid water appeared on the surface

3.8-3.5 billion years ago the first life forms appeared

2 billion years ago photosynthetic life appeared providing oxygen

580 million years ago multi-cellular organisms appeared.

After this the Earth transformed and diversified