Areproductive barrier that prevents species from mating is an example of reduced hybrid fertility reduced hybrid viability a post-zygotic barrier zygote mortality a pre-zygotic barrier

True to the fact it is actually false

What is the question? if you were looking to design a method of separating something, you can separate this compound by putting both in water and allowing the water to dissolve the sugar. then pour it into another beaker and evaporate it then boom! salt and sugar : ) 

Yes yes yes very good