Science, Maths & Technology
Introduction to ecosystems
...geography. In the Arctic, you've got land and then a deep ocean in the middle. Whereas in the Antarctic, you've got land in the middle and deep ocean around the edge. If you go back to the Arctic, in winter, all of that Arctic Ocean gets frozen over with what we call sea ice, which is a very thin layer of ice, only perhaps two or three metres thick. It extends out - about...