No. Black holes do not give off anything other than small amounts of Hawking radiation. That note aside, scientists do not know what dark matter is or what its origin is.
Black holes are not made up of dark matter. Dark matter is a mysterious substance that makes up a large portion of the universe's mass, but black holes are formed from the collapse of massive stars.
Dark matter and black holes are both mysterious components of the universe, but they are not directly related. Dark matter is an invisible substance that makes up a large portion of the universe's mass, while black holes are extremely dense regions in space where gravity is so strong that not even light can escape. While dark matter may influence the formation and behavior of black holes, they are fundamentally different phenomena in the cosmos.
No, when the big bang happend dark matter and dark energy came. Dark matter expands space even as we speak.
Neither, dark matter is an undetectable yet massive existence within our universe. It is spread out relatively smoothly, not bunching up in particular locations. For more information, search dark matter images (computer simulated), they help the visualization of it.
No, dark matter is quite a different kind of thing. A dark hole may have absorbed some dark matter, but pressumably that would become indistinguishable from the normal matter, once it gets crushed by the enormous gravity of the black hole.
I think that's unlikely. The only relevant features of black holes are its mass, electric charge, and rotational momentum. What makes dark matter different to baryonic ("normal") matter is that it doesn't interact with normal matter, except through gravity - so it seems that none of the differences would be relevant, once such matter is converted to a black hole.
No, dark matter is quite a different kind of thing. A dark hole may have absorbed some dark matter, but pressumably that would become indistinguishable from the normal matter, once it gets crushed by the enormous gravity of the black hole.
No light can excape what its caught in the black holes
No. The mass, and therefore the gravitation, of black holes, are only a tiny fraction of matter in the galaxies. The greatest part of the matter in a galaxy is dark matter - matter of unknown composition at the time of this writing.
Galaxies, nebulae, black holes, dust, protostars, dark matter, and so much more we haven't discovered. Oh wait, I forgot neutron stars and super/hypernovas.
Dark matter is a mysterious substance that makes up a large portion of the universe's mass, but its exact nature is still unknown. While some theories suggest that dark matter could potentially be made up of black holes, this idea is not widely accepted among scientists. More research and evidence are needed to determine the true nature of dark matter.
well, they both invisible and they got gravity. However Black Holes sucks everything into it and dark matter go through things and it holds up the universe together.