Well, the effect on the population would be that there would be no children born of that union. Since it takes a male and a female to produce offsping, and since, by definition, a same-sex marriage would contain 2 persons of the same sex, they would contribute 0% to the population growth.
Alternate Answer:The legalization of same-sex marriage has no effect on population growth, since the parties involved will presumably not be having any sex with members of the opposite gender. Withholding the civil rights of persons who are not having heterosexual sex does not cause them to start reproducing.
I don't think you can. You either has to be single or married to adopt. Just living together is neither. if you are in a samesex relationship and has gone through partnership might be possible though.
Anyone can do anything they want to as long as they truly want it. No, in Islam having a boyfriend/girlfriend type of relationship is not allowed whether your a male or a female and whether the bf/gf is Muslim or not. If you have anymore questions regarding the matter, just ask and I'll be happy to answer them. i gree in islam having a boyfrnd or a grlfrnd is not allowd but today no youngr generation follows it .....so if a muslim girl personlly like a non muslim boy...then it is not allowd in islam.....u cannot marry him unless he accpts islam...:)