Food has many complex molecules, such as carbohydrates and fats, that store energy. The human body is able to gain this energy by breaking down the molecules.
nitrogen can form an ionic bond
One reason people are fat is because they eat and eat and eat and don't exercise. Another reason is because some people have fast working calorie burning systems and some people have slow ones causing them to be fat.
It might be that those people that are not fat have high metabolism you eat as much as you want and not get fat.
Cellulose has more chemical bonds.
by breaking chemical bonds in the molecules
To ensure that good and reliable data are collected