Antarctica, the world’s southernmost continent, is almost wholly covered by an ice sheet and is about 5.5 million square miles (14.2 million square km) in size. The first antarctic land discovered was the island of south georgia, visited by the english merchant anthony de la roché in 1675. Without any ice, antarctica would emerge as a giant peninsula and archipelago of mountainous islands, known as lesser antarctica, and a single large landmass about the size of australia, known as greater antarctica.
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Antarctica faces the possibility of sudden and potentially irreversible changes to its ice, oceans, and ecosystems
Scientists warn that without a sharp global reduction in carbon emissions, these.
Antarctica is the coldest, windiest, and least populated continent on the planet It is in the southern hemisphere and it is surrounded by the southern ocean. Though antarctica is really, really chilly, it is considered a desert because it receives very little rain or snowfall The small amount of snow that does fall does not melt but builds up over hundreds and thousands of years to form large, thick ice sheets.
Antarctica is a continent capped by an inland ice sheet up to 4.8km thick, containing approximately 90% of the world’s total surface fresh water (and 60% of the world’s total fresh water). The research review, led by professor nerilie abram from the australian national university (now australian antarctic division chief scientist), shows that multiple rapid changes across the antarctic environment are already underway, or.
