Most fully-formed galaxies reside in small groups and clusters, where they can interact with other galaxies. These interactions can have major effects on the characteristics of a galaxy. Use the labels to complete the descriptions of how interactions can cause galaxies to evolve over time.

a. A starburst galaxy is characterized by a rapid and intense period of star formation
b. A minor galaxy merger in which a large galaxy consumes a smaller galaxy is calledgalactic cannibalism
c. As two galaxies interact and strip stars from each other, a tidal stream of stars can form
d. When two large galaxies collide, a major merger occurs, turning spirals into ellipticals with no ongoing star formation

B. A minor galaxy merger in which a larger galaxy consumes a smaller galaxy in the act of galactic cannibalism.

Explanation:

If this is a situation that makes the most sense, B would be correct, as this can already be observed with the Local Group. Hence, the fact the Milky Way and the Andromeda Galaxy are hurling at eachother, in which the Andromeda galaxy will merge with the Milky Way and become the dominant galaxy of the Local Group over billions of years.

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