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.
sea. 1  the salt waters that cover the greater part of the earth's surface. 2  a division of these waters, of considerable extent, more or less definitely marked off by land boundaries: the North Sea. 3  one of the seven seas; ocean. 4  a large lake or landlocked body of water.