No one knows. Most black holes are assumed to not have or be part of a wormhole (hole in space from one side of the universe to another) - most will just crush anything to infinitely small parts.
yes they can. black holes "suck" in all matter including light but they can only "suck" in things that pass the event horizon everything else is safe
You can't because they suck in light, there for you cannot see them
There are hypotheses about so called 'virtual particles' that may travel faster than speed of light, and hence are not sucked up by Black Holes. Also, Black Holes cannot suck another bigger Black Hole, when they meet a bigger one, they get sucked up rather.
no. white holes are actually an object predicted by scientists to exist on the other side of a black hole. it is predicted to spit out objects that entered a black hole.
Even though black holes suck through parts of the universe, the universe is inevitably big, and growing so as the universe is being sucked into another dimension by black holes, it is also expanding.
Yes, all black holes 'suck stuff up'.
Black holes. They can be so large that they can suck up universes at a time
yes they can. black holes "suck" in all matter including light but they can only "suck" in things that pass the event horizon everything else is safe
yes
Yes
Yes, just like the Sun, the Earth or the Moon "suck stuff up". Though I would prefer a different term, for example "attracts objects gravitationally".
yes but not likely
Yes.
Black holes were stars that were so massive that they collapsed on itself. The gravity in black holes is infinite and more you get closer to it, more time gets slower. Black holes suck all matter that is too close. Even light can't escape Black holes.
You can't because they suck in light, there for you cannot see them
Absolutely anything and everything. They may even suck up time(!!!!!), but no one knows for sure.
There are hypotheses about so called 'virtual particles' that may travel faster than speed of light, and hence are not sucked up by Black Holes. Also, Black Holes cannot suck another bigger Black Hole, when they meet a bigger one, they get sucked up rather.