Of course it has, documented in dozens of species, a very normal natural occurrence in nature.<quoted text>
No, science has proved no such thing.
Science can't explain a purpose for homosexuality. It looks like it will quickly be proved as a epi-genetic epi-marker mistake. Or in their words, "markers that are 'normally' removed for the next, different gendered child of a couple."
You aren't known for your brain, are you.
The problem here is that we are trying to talk to the uneducated. Ignorance in this day and age is a choice, and we cant teach people that choose to be ignorant.