The annual health-care costs for people who are extremely obese are almost twice those of normal-weight people. Very sobering is the fact that severe obesity is increasing at a much faster rate than moderate obesity, quadrupling from 1986â2000.6.
As a sea is connected to the oceans, which are salt water, most seas are also salt water. This is not a distinguishing feature between a sea and a lake, however, as lakes are more commonly freshwater but can be salty depending on their source and their surroundings.
A lake (in Scotland a loch and in Ireland a lough) is an area (prototypically filled with water, also of variable size), localized in a basin, that is surrounded by land apart from any river or other outlet that serves to feed or drain the lake. The largest lake on an island is Nettilling Lake on Baffin Island, with an area of 5,542 square kilometres (2,140 sq mi) and a maximum length of 123 kilometres (76 mi). 2  The largest lake in the world that drains naturally in two directions is Wollaston Lake.