Does Antarctica contain 90 percent of the worlds snow?

Yes, it does. Antarctica is the coldest, driest, and highest continent on Earth. Antarctica is the fifth largest continent, about 14.2 million km² (5.5 million sq mi), almost twice the size of Australia. Antarctica contains about 90 percent of the world's ice and 70 percent of the world's fresh water, and covers roughly 10% of the Earth's surface. Ice sheets up to 4.8 km (3 mi) thick cover most of the land, and more than 98% of the continent is blanketed in ice an average 2,160 m (7,100 ft) thick; the average elevation of the continent is almost 2,000 m (6,600 ft). Much of Antarctica lies south of the Antarctic Circle, which encircles the continent at 66°34′S latitude.