Are there gay people in Antarctica?
Yes. It is where they invented and obtained US Patent Rights to their Cold Shoulder. You can't sob on it for free if they have ignored you.
It is possible at least 5 percent of humanity ,is thought to be Gay,Lesbian or Bisexual
Sure. Given how many work there.
There are no people in Antarctic at all, other than explorers and scientists. But some of those explorers and scientists are gay.
A gay person has probably been to Antarctica. He/she probably didn't stay there.