Name 5 major events occured during the precambrian era?

1) the solar system and light formed.
2)  Earth's formation, approximately 4,5 billion years ago.
3) the creation of the atmosphere through volcanic out gassing; Earth's primitive atmosphere made a transition to an oxygen rich atmosphere.
4) formation of landmass and oceans.
5) the creation of life;  there is evidence of the earliest appearance of eukaryotes.

Where are the phrases

Basalt rock can be rough or maybe smooth