Put the steps of star formation in the correct order. Reorder answers
1.Clouds of gas and dust form within galaxies.
Reorder answers
2.A disk forms, with a growing "protostar" at the center.
Reorder answers
3.When the protostar begins to undergo fusion, it becomes a real star.
Reorder answers
4.Disturbances cause the formation of clusters with sufficient mass that the gas and dust collapse due to their own gravitational pull.