Which factor is essential to the initial formation of galaxies, for either of the theories describing galaxy evolution?(1 point)
Responses:
a) The force of orbiting stars generates collisions.
b) Gravity acts on existing material, shaping it into a new form.
c) Massive gas and dust clouds collapse.
d) Small lumps of material merge into larger clumps.
1 answer
c) Massive gas and dust clouds collapse.