What happens when two species have similar niches in the same habitat?

They either mate and have strange looking babies or they end up killing each other They compete for resources, and sometimes one species just happens to have something that makes them a little bit better to occupy that niche, and therefore the other species either dies, moves on, mates (if they are genetically related enough, such as a wolf and a dog), if capable tries to get its nutrients from another source (wolves kill all of the deer, so bears decide to eat from garbage cans or something). There are probably some other options, but it isn't uncommon for one species to have to leave or ends up dying.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.