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.
The main difference that can be seen between rivers and lakes, is water movement. If you observe a river, it basically moves or runs along its banks. Commonly, rivers often flow in only one direction. On the contrary, lakes seem to be immobile, thatâs why they are often regarded as still bodies of water.