Question

Which factors are most likely to affect whether a galaxy. will evolve by merging
with a second galaxy? Select the two correct answers. (1 point)
its age compared to that of the other galaxy
its size compared to that of the other galaxy
its proportion of gas compared to that of the other galaxy
its distance from the other galaxy

Answer 1

The two factors most likely to affect whether a galaxy will evolve by merging with a second galaxy are:

1. **Its size compared to that of the other galaxy** - The gravitational influence and dynamics of the galaxies' sizes play a critical role in their potential to merge. Larger galaxies have a greater gravitational pull, which can influence interactions with smaller galaxies.

2. **Its distance from the other galaxy** - The proximity of galaxies to one another is crucial for determining whether they will interact or merge. A smaller distance increases the likelihood of gravitational attraction leading to a merger.

While the age of a galaxy and its gas content might influence effects after a merger, they are not primary factors affecting the likelihood of a merger occurring.