Generally, food disappears when it is eaten. Otherwise, a food cache may be covered by wind-blown ice crystals and hidden from sight.
Antarctica is a continent -- one of seven on earth. It is unlikely to disappear.
People disappear by falling into a crevasse, by slipping under the sea ice or by wandering off alone in to the Antarctic wild.
Food in Antarctica is generally called edible.
If the forests disappear, forest animals will disappear as well which can disrupt the whole food chain.
There are no spiders on Antarctica: there's no food chain for them there.
There are no animals on Antarctica; there is no food chain there: it's too cold.
A bat looking for food in Antarctica would starve to death, because there is none -- no food chain on the continent.
If one of the carnivores disappear then its likely that it will not effect the food chain so the territory is safe so it can carry on his food chain
you find food by fishing and packing your food.
There is no food chain for land animals on Antarctica, because there are no land animals that live there.
Antarctica is uninhabited; it has no staple food, at least for people. Penguins who live there eat fish.
There are no native people in Antarctica.