70.9% of the Earth's surface is covered by water. Of that, 97% is in the Earth's oceans, 2.4% are in polar ice caps and glaciers, and the remaining 0.6% is in the land surfaceâ¦ water areas of the Earth.
Hypertrophic obesity is excessive weight gain in adulthood. Hypertrophic is when the fat cells get bigger. This is as opposed to Hyperplastic obesity, which is the gaining of fat cells. The latter only occurs during childhood, or if the person gains a lot of weight fast.
Body mass index (BMI) is a measure of body fat based on height and weight. Obesity is defined as a BMI of greater than or equal to 30 kilos per meter squared and morbid obesity is defined as a BMI greater than or equal to 40 kilos per meter squared.Among Americans 20 years and older, 28% are obese and 5% are morbidly obese.besity is defined as a BMI of greater than or equal to 30 kilos per meter squared and morbid obesity is defined as a BMI greater than or equal to 40 kilos per meter squared.