This is not a likely scenario, since there is nothing on the Antarctic continent to offer 'settlers' any resources in terms of food, shelter and economy.
Without humans in Antarctica, there would be no scientific research as to the health of planet earth.
there wouldn't be any tourists in Antarctica
Nothing would happen. Humans ARE animals.
Animals will die
Nothing.
we will die in pane
Sea level will rise
It would generate a global catastrophe.
They would die.
Antarctica is too cold and dry for agriculture or for growing anything. Within a few hours, the cactus would freeze.
There is no 'regular plane' service to Antarctica. Every flight is commissioned, either privately or by a government.
Someone would have to invent them