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.
To start with, a pond is usually smaller than a lake. A pond usually has mostly still water, while a lake may have currents. Ponds are overall much more shallow than lakes, which can be very deep. Ponds may be fed by a small stream, whereas a lake is usually fed by several streams.The water temperature of a pond is usually the same throughout, while a lake may have layers of different temperatures in its depths.Lastly, ponds have more plant life than lakes.onds may be fed by a small stream, whereas a lake is usually fed by several streams. The water temperature of a pond is usually the same throughout, while a lake may have layers of different temperatures in its depths. Lastly, ponds have more plant life than lakes.