According to some info I got, when galaxies formed in the early age of the universe, they likely contained small black holes in their centers. As the standard scenario of galaxy formation, galaxies grow by coming together with one another by the pull of gravity. In the process, the black holes at their center merge together and quickly grow to reach their observed masses of a billion times that of the Sun; hence, they are called super massive black holes. Also at the time of emergence, the majority of stars form from available gas. Today's galaxies and their central black holes must be the result of a series of such events.
ACTUALLY: It depends, which is larger, and if this happend they would "combine" to create a much larger black hole.
In a black hole, gravity is so strong that nothing, not even light, can escape. This means that whatever goes into a black hole is trapped inside forever, making the saying "what happens in a black hole stays in a black hole" true.
That's not exactly what happens. What really happens is that they just absorb each other and become a bigger black hole.
The object swallowed by the black hole is destroyed; its mass is added to the mass of the black hole.
Any matter that enters the black hole will be destroyed. Also, it will increase the black hole's size.
It evaporates.
evaporation
Its called a Super Black-hole and scientists believe it is what holds all galaxies together.
They will merge to form a single black hole with the combined mass of the town that merged.
Objects which approach a black hole will get sucked into it.
It gets bent toward the black hole's singularity.
You die.
if you go close enough to a black hole you can get stretched to death the end