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

Answer 1

Massive gas and dust clouds collapse.

Answer 2

Which characteristics are considered most typical of an old galaxy in decline?(1 point) Responses shrinking in size, high dust content  shrinking in size, high dust content  very bright, relatively small very bright, relatively small spiral, abundant planets present spiral, abundant planets present low gas content, little star formation

Answer 3

low gas content, little star formation

Answer 4

With which type of galaxy is a small galaxy most likely to merge? Select the two correct answers.(1 point) Responses a fast-moving galaxy a fast-moving galaxy an equal-sized galaxy an equal-sized galaxy a nearby galaxy a nearby galaxy a much larger galaxy

Answer 5

a nearby galaxy and a much larger galaxy