If the air temperature is low enough to keep the precipitation frozen, it falls as lake-effect snow. For lake-effect rain or snow to form, the air moving across the lake must be significantly cooler than the surface air (which is likely to be near the temperature of the water surface).
Major Health Problems Associated with Childhood ObesityCauses of obesity in children: Physical Activity: Lack of physical activity and a sedentary lifestyle are major contributors to obesity. Low physical activity in children may also be associated with a higher risk of developing cardiovascular disease.
Childhood obesity. For the medical journal, see Childhood Obesity (journal). Childhood obesity is a condition where excess body fat negatively affects a child's health or well-being. As methods to determine body fat directly are difficult, the diagnosis of obesity is often based on BMI.