Number the steps of stellar evolution in the correct order

1.) Nebular cloud of gas and dust.

2.) Cloud collapses under the force of its own gravitational attraction; usually triggered by a supernova.

3.)Condensed material begins to combine and form a core center, as it warms, a  protostar is formed.

4.)Other gas and matter of the nebular cloud begin to rotate around the protostar, forming a flattened disk.

5.) Stellar core heats as it grows; nuclear fusion begins and a star is born.

6.) Nuclear energy runs out; death: possible supernova.

Hope this helped you out!

the part of the wave he is travelling on is the crest

higher potential

explanation:

because it is in a high speed so it must move into a of high potential