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 Vs Lake. Almost anybody knows the difference between a lake and a sea. However, when asked about the true nature of other seas like the Caspian Sea, people will already have second thoughts. Yes, the confusion sets in when identifying some bodies of water which are called seas but are actually lakes.