what are the major physical characteristics of antarctica?
['Seriously thick ice. One of the most fascinating things about Antarctica is that it is, in fact, a landmass. ... ', "Abundant resources. Most of the planet's freshwater sits in Antarctica's ice. ... ", 'Hidden lake. ... ', 'Massive mountains. ... ', 'Lots of research. ... ', 'Midnight (or absent) sun. ... ', 'Wind. ... ', 'Volcanic activity.']